Home / 919,901.10-1,379,851.65-320,663.10

Finding the Fourth Proportional to 919,901.10, 1,379,851.65 and 320,663.10

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Solution

The fourth proportional to 919,901.10, 1,379,851.65 and 320,663.10 is: 480,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,901.10 : 1,379,851.65 = 320,663.10 : x
  2. Step 2: Convert to fraction form
    919,901.10/1,379,851.65 = 320,663.10/x
  3. Step 3: Cross multiply
    919,901.10x = 1,379,851.65 × 320,663.10
  4. Step 4: Simplify right side
    919,901.10x = 442,467,507,629.12
  5. Step 5: Solve for x
    x = 442,467,507,629.12/919,901.10
  6. Step 6: Final answer
    x = 480,994.65

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Double scale
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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.