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Finding the Fourth Proportional to 649,487.70, 974,231.55 and 436,911.30

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Solution

The fourth proportional to 649,487.70, 974,231.55 and 436,911.30 is: 655,366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,487.70 : 974,231.55 = 436,911.30 : x
  2. Step 2: Convert to fraction form
    649,487.70/974,231.55 = 436,911.30/x
  3. Step 3: Cross multiply
    649,487.70x = 974,231.55 × 436,911.30
  4. Step 4: Simplify right side
    649,487.70x = 425,652,773,011.52
  5. Step 5: Solve for x
    x = 425,652,773,011.52/649,487.70
  6. Step 6: Final answer
    x = 655,366.95

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Half scale
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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.