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Finding the Fourth Proportional to 658,161.27, 908,352.75 and 378,752.71

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Solution

The fourth proportional to 658,161.27, 908,352.75 and 378,752.71 is: 522,730.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,161.27 : 908,352.75 = 378,752.71 : x
  2. Step 2: Convert to fraction form
    658,161.27/908,352.75 = 378,752.71/x
  3. Step 3: Cross multiply
    658,161.27x = 908,352.75 × 378,752.71
  4. Step 4: Simplify right side
    658,161.27x = 344,041,063,427.57
  5. Step 5: Solve for x
    x = 344,041,063,427.57/658,161.27
  6. Step 6: Final answer
    x = 522,730.64

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Double scale
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Similar ratio
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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.