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Finding the Fourth Proportional to 663,369,862.68, 915,478,095.78 and 366,031,390.92

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Solution

The fourth proportional to 663,369,862.68, 915,478,095.78 and 366,031,390.92 is: 505,138,595.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,369,862.68 : 915,478,095.78 = 366,031,390.92 : x
  2. Step 2: Convert to fraction form
    663,369,862.68/915,478,095.78 = 366,031,390.92/x
  3. Step 3: Cross multiply
    663,369,862.68x = 915,478,095.78 × 366,031,390.92
  4. Step 4: Simplify right side
    663,369,862.68x = 335,093,720,755,146,368
  5. Step 5: Solve for x
    x = 335,093,720,755,146,368/663,369,862.68
  6. Step 6: Final answer
    x = 505,138,595.54

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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.