Home / 1,212,741,605.10-1,819,112,407.65-668,546,021.10

Finding the Fourth Proportional to 1,212,741,605.10, 1,819,112,407.65 and 668,546,021.10

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Solution

The fourth proportional to 1,212,741,605.10, 1,819,112,407.65 and 668,546,021.10 is: 1,002,819,031.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,741,605.10 : 1,819,112,407.65 = 668,546,021.10 : x
  2. Step 2: Convert to fraction form
    1,212,741,605.10/1,819,112,407.65 = 668,546,021.10/x
  3. Step 3: Cross multiply
    1,212,741,605.10x = 1,819,112,407.65 × 668,546,021.10
  4. Step 4: Simplify right side
    1,212,741,605.10x = 1,216,160,362,068,048,896
  5. Step 5: Solve for x
    x = 1,216,160,362,068,048,896/1,212,741,605.10
  6. Step 6: Final answer
    x = 1,002,819,031.65

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Half scale
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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.