Home / 680,172,764.92-938,608,222.68-378,773,624.68

Finding the Fourth Proportional to 680,172,764.92, 938,608,222.68 and 378,773,624.68

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Solution

The fourth proportional to 680,172,764.92, 938,608,222.68 and 378,773,624.68 is: 522,690,788.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,172,764.92 : 938,608,222.68 = 378,773,624.68 : x
  2. Step 2: Convert to fraction form
    680,172,764.92/938,608,222.68 = 378,773,624.68/x
  3. Step 3: Cross multiply
    680,172,764.92x = 938,608,222.68 × 378,773,624.68
  4. Step 4: Simplify right side
    680,172,764.92x = 355,520,038,658,956,160
  5. Step 5: Solve for x
    x = 355,520,038,658,956,160/680,172,764.92
  6. Step 6: Final answer
    x = 522,690,788.27

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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.