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Finding the Fourth Proportional to 649,372.80, 974,059.20 and 369,436.80

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Solution

The fourth proportional to 649,372.80, 974,059.20 and 369,436.80 is: 554,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,372.80 : 974,059.20 = 369,436.80 : x
  2. Step 2: Convert to fraction form
    649,372.80/974,059.20 = 369,436.80/x
  3. Step 3: Cross multiply
    649,372.80x = 974,059.20 × 369,436.80
  4. Step 4: Simplify right side
    649,372.80x = 359,853,313,858.56
  5. Step 5: Solve for x
    x = 359,853,313,858.56/649,372.80
  6. Step 6: Final answer
    x = 554,155.20

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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.