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Finding the Fourth Proportional to 518,729.16, 715,851.71 and 292,374.66

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Solution

The fourth proportional to 518,729.16, 715,851.71 and 292,374.66 is: 403,480.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,729.16 : 715,851.71 = 292,374.66 : x
  2. Step 2: Convert to fraction form
    518,729.16/715,851.71 = 292,374.66/x
  3. Step 3: Cross multiply
    518,729.16x = 715,851.71 × 292,374.66
  4. Step 4: Simplify right side
    518,729.16x = 209,296,900,321.67
  5. Step 5: Solve for x
    x = 209,296,900,321.67/518,729.16
  6. Step 6: Final answer
    x = 403,480.11

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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.