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Finding the Fourth Proportional to 518,385.17, 715,649.06 and 363,812.11

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Solution

The fourth proportional to 518,385.17, 715,649.06 and 363,812.11 is: 502,255.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,385.17 : 715,649.06 = 363,812.11 : x
  2. Step 2: Convert to fraction form
    518,385.17/715,649.06 = 363,812.11/x
  3. Step 3: Cross multiply
    518,385.17x = 715,649.06 × 363,812.11
  4. Step 4: Simplify right side
    518,385.17x = 260,361,794,538.12
  5. Step 5: Solve for x
    x = 260,361,794,538.12/518,385.17
  6. Step 6: Final answer
    x = 502,255.48

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Double scale
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1.5x scale

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.