Home / 521,932,639.50-720,248,605.70-286,981,654.86

Finding the Fourth Proportional to 521,932,639.50, 720,248,605.70 and 286,981,654.86

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Solution

The fourth proportional to 521,932,639.50, 720,248,605.70 and 286,981,654.86 is: 396,024,546.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,932,639.50 : 720,248,605.70 = 286,981,654.86 : x
  2. Step 2: Convert to fraction form
    521,932,639.50/720,248,605.70 = 286,981,654.86/x
  3. Step 3: Cross multiply
    521,932,639.50x = 720,248,605.70 × 286,981,654.86
  4. Step 4: Simplify right side
    521,932,639.50x = 206,698,136,772,958,752
  5. Step 5: Solve for x
    x = 206,698,136,772,958,752/521,932,639.50
  6. Step 6: Final answer
    x = 396,024,546.33

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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.