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Finding the Fourth Proportional to 547,507.80, 820,905.30 and 491,520.60

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Solution

The fourth proportional to 547,507.80, 820,905.30 and 491,520.60 is: 736,960.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,507.80 : 820,905.30 = 491,520.60 : x
  2. Step 2: Convert to fraction form
    547,507.80/820,905.30 = 491,520.60/x
  3. Step 3: Cross multiply
    547,507.80x = 820,905.30 × 491,520.60
  4. Step 4: Simplify right side
    547,507.80x = 403,491,865,599.18
  5. Step 5: Solve for x
    x = 403,491,865,599.18/547,507.80
  6. Step 6: Final answer
    x = 736,960.94

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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.