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Finding the Fourth Proportional to 547,286.10, 820,929.15 and 460,680.90

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Solution

The fourth proportional to 547,286.10, 820,929.15 and 460,680.90 is: 691,021.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,286.10 : 820,929.15 = 460,680.90 : x
  2. Step 2: Convert to fraction form
    547,286.10/820,929.15 = 460,680.90/x
  3. Step 3: Cross multiply
    547,286.10x = 820,929.15 × 460,680.90
  4. Step 4: Simplify right side
    547,286.10x = 378,186,379,658.24
  5. Step 5: Solve for x
    x = 378,186,379,658.24/547,286.10
  6. Step 6: Final answer
    x = 691,021.35

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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.