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Finding the Fourth Proportional to 664,313.70, 996,470.55 and 365,715.30

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Solution

The fourth proportional to 664,313.70, 996,470.55 and 365,715.30 is: 548,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,313.70 : 996,470.55 = 365,715.30 : x
  2. Step 2: Convert to fraction form
    664,313.70/996,470.55 = 365,715.30/x
  3. Step 3: Cross multiply
    664,313.70x = 996,470.55 × 365,715.30
  4. Step 4: Simplify right side
    664,313.70x = 364,424,526,134.42
  5. Step 5: Solve for x
    x = 364,424,526,134.42/664,313.70
  6. Step 6: Final answer
    x = 548,572.95

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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.