Home / 526,560.20-789,840.30-521,311.40

Finding the Fourth Proportional to 526,560.20, 789,840.30 and 521,311.40

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Solution

The fourth proportional to 526,560.20, 789,840.30 and 521,311.40 is: 781,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,560.20 : 789,840.30 = 521,311.40 : x
  2. Step 2: Convert to fraction form
    526,560.20/789,840.30 = 521,311.40/x
  3. Step 3: Cross multiply
    526,560.20x = 789,840.30 × 521,311.40
  4. Step 4: Simplify right side
    526,560.20x = 411,752,752,569.42
  5. Step 5: Solve for x
    x = 411,752,752,569.42/526,560.20
  6. Step 6: Final answer
    x = 781,967.10

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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.