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Finding the Fourth Proportional to 522,655.74, 721,574.11 and 329,229.26

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Solution

The fourth proportional to 522,655.74, 721,574.11 and 329,229.26 is: 454,531.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,655.74 : 721,574.11 = 329,229.26 : x
  2. Step 2: Convert to fraction form
    522,655.74/721,574.11 = 329,229.26/x
  3. Step 3: Cross multiply
    522,655.74x = 721,574.11 × 329,229.26
  4. Step 4: Simplify right side
    522,655.74x = 237,563,310,270.46
  5. Step 5: Solve for x
    x = 237,563,310,270.46/522,655.74
  6. Step 6: Final answer
    x = 454,531.14

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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.