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Finding the Fourth Proportional to 394,892,601.70, 592,338,902.55 and 280,101,345.70

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Solution

The fourth proportional to 394,892,601.70, 592,338,902.55 and 280,101,345.70 is: 420,152,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,892,601.70 : 592,338,902.55 = 280,101,345.70 : x
  2. Step 2: Convert to fraction form
    394,892,601.70/592,338,902.55 = 280,101,345.70/x
  3. Step 3: Cross multiply
    394,892,601.70x = 592,338,902.55 × 280,101,345.70
  4. Step 4: Simplify right side
    394,892,601.70x = 165,914,923,714,716,128
  5. Step 5: Solve for x
    x = 165,914,923,714,716,128/394,892,601.70
  6. Step 6: Final answer
    x = 420,152,018.55

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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.