Home / 747,712.20-1,121,568.30-298,502.40

Finding the Fourth Proportional to 747,712.20, 1,121,568.30 and 298,502.40

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Solution

The fourth proportional to 747,712.20, 1,121,568.30 and 298,502.40 is: 447,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,712.20 : 1,121,568.30 = 298,502.40 : x
  2. Step 2: Convert to fraction form
    747,712.20/1,121,568.30 = 298,502.40/x
  3. Step 3: Cross multiply
    747,712.20x = 1,121,568.30 × 298,502.40
  4. Step 4: Simplify right side
    747,712.20x = 334,790,829,313.92
  5. Step 5: Solve for x
    x = 334,790,829,313.92/747,712.20
  6. Step 6: Final answer
    x = 447,753.60

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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.