Home / 1,320,373,313.10-1,980,559,969.65-631,625,777.10

Finding the Fourth Proportional to 1,320,373,313.10, 1,980,559,969.65 and 631,625,777.10

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Solution

The fourth proportional to 1,320,373,313.10, 1,980,559,969.65 and 631,625,777.10 is: 947,438,665.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,373,313.10 : 1,980,559,969.65 = 631,625,777.10 : x
  2. Step 2: Convert to fraction form
    1,320,373,313.10/1,980,559,969.65 = 631,625,777.10/x
  3. Step 3: Cross multiply
    1,320,373,313.10x = 1,980,559,969.65 × 631,625,777.10
  4. Step 4: Simplify right side
    1,320,373,313.10x = 1,250,972,729,923,333,888
  5. Step 5: Solve for x
    x = 1,250,972,729,923,333,888/1,320,373,313.10
  6. Step 6: Final answer
    x = 947,438,665.65

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Half scale
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Double scale
Find fourth proportional to 1,320,373,314.10, 1,980,559,971.15 and 631,625,778.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.