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Finding the Fourth Proportional to 547,261.90, 820,892.85 and 509,937.10

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Solution

The fourth proportional to 547,261.90, 820,892.85 and 509,937.10 is: 764,905.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,261.90 : 820,892.85 = 509,937.10 : x
  2. Step 2: Convert to fraction form
    547,261.90/820,892.85 = 509,937.10/x
  3. Step 3: Cross multiply
    547,261.90x = 820,892.85 × 509,937.10
  4. Step 4: Simplify right side
    547,261.90x = 418,603,719,339.74
  5. Step 5: Solve for x
    x = 418,603,719,339.74/547,261.90
  6. Step 6: Final answer
    x = 764,905.65

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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.