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Finding the Fourth Proportional to 518,818.50, 715,980.47 and 292,464

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Solution

The fourth proportional to 518,818.50, 715,980.47 and 292,464 is: 403,606.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,818.50 : 715,980.47 = 292,464 : x
  2. Step 2: Convert to fraction form
    518,818.50/715,980.47 = 292,464/x
  3. Step 3: Cross multiply
    518,818.50x = 715,980.47 × 292,464
  4. Step 4: Simplify right side
    518,818.50x = 209,398,510,715.76
  5. Step 5: Solve for x
    x = 209,398,510,715.76/518,818.50
  6. Step 6: Final answer
    x = 403,606.48

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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.