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Finding the Fourth Proportional to 518,711.36, 715,841.70 and 292,352

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Solution

The fourth proportional to 518,711.36, 715,841.70 and 292,352 is: 403,457.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,711.36 : 715,841.70 = 292,352 : x
  2. Step 2: Convert to fraction form
    518,711.36/715,841.70 = 292,352/x
  3. Step 3: Cross multiply
    518,711.36x = 715,841.70 × 292,352
  4. Step 4: Simplify right side
    518,711.36x = 209,277,752,678.40
  5. Step 5: Solve for x
    x = 209,277,752,678.40/518,711.36
  6. Step 6: Final answer
    x = 403,457.05

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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.