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Finding the Fourth Proportional to 579,404.70, 869,107.05 and 486,092.70

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Solution

The fourth proportional to 579,404.70, 869,107.05 and 486,092.70 is: 729,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,404.70 : 869,107.05 = 486,092.70 : x
  2. Step 2: Convert to fraction form
    579,404.70/869,107.05 = 486,092.70/x
  3. Step 3: Cross multiply
    579,404.70x = 869,107.05 × 486,092.70
  4. Step 4: Simplify right side
    579,404.70x = 422,466,592,523.54
  5. Step 5: Solve for x
    x = 422,466,592,523.54/579,404.70
  6. Step 6: Final answer
    x = 729,139.05

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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.