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Finding the Fourth Proportional to 518,902.78, 716,084.65 and 292,546.66

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Solution

The fourth proportional to 518,902.78, 716,084.65 and 292,546.66 is: 403,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,902.78 : 716,084.65 = 292,546.66 : x
  2. Step 2: Convert to fraction form
    518,902.78/716,084.65 = 292,546.66/x
  3. Step 3: Cross multiply
    518,902.78x = 716,084.65 × 292,546.66
  4. Step 4: Simplify right side
    518,902.78x = 209,488,172,634.77
  5. Step 5: Solve for x
    x = 209,488,172,634.77/518,902.78
  6. Step 6: Final answer
    x = 403,713.72

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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.