Home / 721,752,619.24-996,028,169.70-391,731,714.28

Finding the Fourth Proportional to 721,752,619.24, 996,028,169.70 and 391,731,714.28

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Solution

The fourth proportional to 721,752,619.24, 996,028,169.70 and 391,731,714.28 is: 540,594,951.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,752,619.24 : 996,028,169.70 = 391,731,714.28 : x
  2. Step 2: Convert to fraction form
    721,752,619.24/996,028,169.70 = 391,731,714.28/x
  3. Step 3: Cross multiply
    721,752,619.24x = 996,028,169.70 × 391,731,714.28
  4. Step 4: Simplify right side
    721,752,619.24x = 390,175,822,387,751,744
  5. Step 5: Solve for x
    x = 390,175,822,387,751,744/721,752,619.24
  6. Step 6: Final answer
    x = 540,594,951.77

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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.