Home / 747,449.20-1,121,523.72-326,670.40

Finding the Fourth Proportional to 747,449.20, 1,121,523.72 and 326,670.40

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Solution

The fourth proportional to 747,449.20, 1,121,523.72 and 326,670.40 is: 490,158.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,449.20 : 1,121,523.72 = 326,670.40 : x
  2. Step 2: Convert to fraction form
    747,449.20/1,121,523.72 = 326,670.40/x
  3. Step 3: Cross multiply
    747,449.20x = 1,121,523.72 × 326,670.40
  4. Step 4: Simplify right side
    747,449.20x = 366,368,602,221.89
  5. Step 5: Solve for x
    x = 366,368,602,221.89/747,449.20
  6. Step 6: Final answer
    x = 490,158.53

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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.