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Finding the Fourth Proportional to 518,823.75, 715,987.71 and 292,469.25

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Solution

The fourth proportional to 518,823.75, 715,987.71 and 292,469.25 is: 403,613.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,823.75 : 715,987.71 = 292,469.25 : x
  2. Step 2: Convert to fraction form
    518,823.75/715,987.71 = 292,469.25/x
  3. Step 3: Cross multiply
    518,823.75x = 715,987.71 × 292,469.25
  4. Step 4: Simplify right side
    518,823.75x = 209,404,388,552.92
  5. Step 5: Solve for x
    x = 209,404,388,552.92/518,823.75
  6. Step 6: Final answer
    x = 403,613.73

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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.