Home / 764,515.54-1,055,034.16-420,373.12

Finding the Fourth Proportional to 764,515.54, 1,055,034.16 and 420,373.12

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Solution

The fourth proportional to 764,515.54, 1,055,034.16 and 420,373.12 is: 580,116.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,515.54 : 1,055,034.16 = 420,373.12 : x
  2. Step 2: Convert to fraction form
    764,515.54/1,055,034.16 = 420,373.12/x
  3. Step 3: Cross multiply
    764,515.54x = 1,055,034.16 × 420,373.12
  4. Step 4: Simplify right side
    764,515.54x = 443,508,001,545.78
  5. Step 5: Solve for x
    x = 443,508,001,545.78/764,515.54
  6. Step 6: Final answer
    x = 580,116.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.