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Finding the Fourth Proportional to 819,797,129.70, 1,229,695,694.55 and 740,718,708.90

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Solution

The fourth proportional to 819,797,129.70, 1,229,695,694.55 and 740,718,708.90 is: 1,111,078,063.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,797,129.70 : 1,229,695,694.55 = 740,718,708.90 : x
  2. Step 2: Convert to fraction form
    819,797,129.70/1,229,695,694.55 = 740,718,708.90/x
  3. Step 3: Cross multiply
    819,797,129.70x = 1,229,695,694.55 × 740,718,708.90
  4. Step 4: Simplify right side
    819,797,129.70x = 910,858,607,206,964,736
  5. Step 5: Solve for x
    x = 910,858,607,206,964,736/819,797,129.70
  6. Step 6: Final answer
    x = 1,111,078,063.35

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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.