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Finding the Fourth Proportional to 549,981,937.38, 760,973,664.75 and 479,564,385.78

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Solution

The fourth proportional to 549,981,937.38, 760,973,664.75 and 479,564,385.78 is: 663,541,551.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,981,937.38 : 760,973,664.75 = 479,564,385.78 : x
  2. Step 2: Convert to fraction form
    549,981,937.38/760,973,664.75 = 479,564,385.78/x
  3. Step 3: Cross multiply
    549,981,937.38x = 760,973,664.75 × 479,564,385.78
  4. Step 4: Simplify right side
    549,981,937.38x = 364,935,868,130,589,376
  5. Step 5: Solve for x
    x = 364,935,868,130,589,376/549,981,937.38
  6. Step 6: Final answer
    x = 663,541,551.69

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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.