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Finding the Fourth Proportional to 547,013.20, 820,519.80 and 488,030.80

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Solution

The fourth proportional to 547,013.20, 820,519.80 and 488,030.80 is: 732,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,013.20 : 820,519.80 = 488,030.80 : x
  2. Step 2: Convert to fraction form
    547,013.20/820,519.80 = 488,030.80/x
  3. Step 3: Cross multiply
    547,013.20x = 820,519.80 × 488,030.80
  4. Step 4: Simplify right side
    547,013.20x = 400,438,934,409.84
  5. Step 5: Solve for x
    x = 400,438,934,409.84/547,013.20
  6. Step 6: Final answer
    x = 732,046.20

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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.