Home / 721,777,183.35-996,053,250.20-391,752,390.39

Finding the Fourth Proportional to 721,777,183.35, 996,053,250.20 and 391,752,390.39

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Solution

The fourth proportional to 721,777,183.35, 996,053,250.20 and 391,752,390.39 is: 540,618,698.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,777,183.35 : 996,053,250.20 = 391,752,390.39 : x
  2. Step 2: Convert to fraction form
    721,777,183.35/996,053,250.20 = 391,752,390.39/x
  3. Step 3: Cross multiply
    721,777,183.35x = 996,053,250.20 × 391,752,390.39
  4. Step 4: Simplify right side
    721,777,183.35x = 390,206,241,721,578,752
  5. Step 5: Solve for x
    x = 390,206,241,721,578,752/721,777,183.35
  6. Step 6: Final answer
    x = 540,618,698.85

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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.