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Finding the Fourth Proportional to 519,468.72, 779,232.72 and 145,520.88

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Solution

The fourth proportional to 519,468.72, 779,232.72 and 145,520.88 is: 218,289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,468.72 : 779,232.72 = 145,520.88 : x
  2. Step 2: Convert to fraction form
    519,468.72/779,232.72 = 145,520.88/x
  3. Step 3: Cross multiply
    519,468.72x = 779,232.72 × 145,520.88
  4. Step 4: Simplify right side
    519,468.72x = 113,394,631,139.19
  5. Step 5: Solve for x
    x = 113,394,631,139.19/519,468.72
  6. Step 6: Final answer
    x = 218,289.62

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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.