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Finding the Fourth Proportional to 509,615.10, 764,422.65 and 454,502.70

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Solution

The fourth proportional to 509,615.10, 764,422.65 and 454,502.70 is: 681,754.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,615.10 : 764,422.65 = 454,502.70 : x
  2. Step 2: Convert to fraction form
    509,615.10/764,422.65 = 454,502.70/x
  3. Step 3: Cross multiply
    509,615.10x = 764,422.65 × 454,502.70
  4. Step 4: Simplify right side
    509,615.10x = 347,432,158,366.16
  5. Step 5: Solve for x
    x = 347,432,158,366.16/509,615.10
  6. Step 6: Final answer
    x = 681,754.05

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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.