Home / 721,777,182.85-996,053,249.51-391,752,389.89

Finding the Fourth Proportional to 721,777,182.85, 996,053,249.51 and 391,752,389.89

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Solution

The fourth proportional to 721,777,182.85, 996,053,249.51 and 391,752,389.89 is: 540,618,698.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,777,182.85 : 996,053,249.51 = 391,752,389.89 : x
  2. Step 2: Convert to fraction form
    721,777,182.85/996,053,249.51 = 391,752,389.89/x
  3. Step 3: Cross multiply
    721,777,182.85x = 996,053,249.51 × 391,752,389.89
  4. Step 4: Simplify right side
    721,777,182.85x = 390,206,240,953,774,336
  5. Step 5: Solve for x
    x = 390,206,240,953,774,336/721,777,182.85
  6. Step 6: Final answer
    x = 540,618,698.16

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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.