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Finding the Fourth Proportional to 527,147.80, 790,721.70 and 488,267.80

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Solution

The fourth proportional to 527,147.80, 790,721.70 and 488,267.80 is: 732,401.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,147.80 : 790,721.70 = 488,267.80 : x
  2. Step 2: Convert to fraction form
    527,147.80/790,721.70 = 488,267.80/x
  3. Step 3: Cross multiply
    527,147.80x = 790,721.70 × 488,267.80
  4. Step 4: Simplify right side
    527,147.80x = 386,083,944,871.26
  5. Step 5: Solve for x
    x = 386,083,944,871.26/527,147.80
  6. Step 6: Final answer
    x = 732,401.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.