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Finding the Fourth Proportional to 536,466.80, 804,700.20 and 287,634.80

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Solution

The fourth proportional to 536,466.80, 804,700.20 and 287,634.80 is: 431,452.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,466.80 : 804,700.20 = 287,634.80 : x
  2. Step 2: Convert to fraction form
    536,466.80/804,700.20 = 287,634.80/x
  3. Step 3: Cross multiply
    536,466.80x = 804,700.20 × 287,634.80
  4. Step 4: Simplify right side
    536,466.80x = 231,459,781,086.96
  5. Step 5: Solve for x
    x = 231,459,781,086.96/536,466.80
  6. Step 6: Final answer
    x = 431,452.20

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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.