Home / 747,710.20-1,121,565.30-298,500.40

Finding the Fourth Proportional to 747,710.20, 1,121,565.30 and 298,500.40

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Solution

The fourth proportional to 747,710.20, 1,121,565.30 and 298,500.40 is: 447,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,710.20 : 1,121,565.30 = 298,500.40 : x
  2. Step 2: Convert to fraction form
    747,710.20/1,121,565.30 = 298,500.40/x
  3. Step 3: Cross multiply
    747,710.20x = 1,121,565.30 × 298,500.40
  4. Step 4: Simplify right side
    747,710.20x = 334,787,690,676.12
  5. Step 5: Solve for x
    x = 334,787,690,676.12/747,710.20
  6. Step 6: Final answer
    x = 447,750.60

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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.