Home / 1,398,038,086.92-1,929,338,897.46-762,993,350.28

Finding the Fourth Proportional to 1,398,038,086.92, 1,929,338,897.46 and 762,993,350.28

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Solution

The fourth proportional to 1,398,038,086.92, 1,929,338,897.46 and 762,993,350.28 is: 1,052,956,112.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,038,086.92 : 1,929,338,897.46 = 762,993,350.28 : x
  2. Step 2: Convert to fraction form
    1,398,038,086.92/1,929,338,897.46 = 762,993,350.28/x
  3. Step 3: Cross multiply
    1,398,038,086.92x = 1,929,338,897.46 × 762,993,350.28
  4. Step 4: Simplify right side
    1,398,038,086.92x = 1,472,072,749,198,526,720
  5. Step 5: Solve for x
    x = 1,472,072,749,198,526,720/1,398,038,086.92
  6. Step 6: Final answer
    x = 1,052,956,112.55

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Double scale
Find fourth proportional to 1,398,038,087.92, 1,929,338,898.84 and 762,993,351.28
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.