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Finding the Fourth Proportional to 517,452.28, 775,255 and 280,643.92

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Solution

The fourth proportional to 517,452.28, 775,255 and 280,643.92 is: 420,465.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,452.28 : 775,255 = 280,643.92 : x
  2. Step 2: Convert to fraction form
    517,452.28/775,255 = 280,643.92/x
  3. Step 3: Cross multiply
    517,452.28x = 775,255 × 280,643.92
  4. Step 4: Simplify right side
    517,452.28x = 217,570,602,199.60
  5. Step 5: Solve for x
    x = 217,570,602,199.60/517,452.28
  6. Step 6: Final answer
    x = 420,465.06

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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.