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Finding the Fourth Proportional to 519,550.71, 717,475.13 and 491,245.63

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Solution

The fourth proportional to 519,550.71, 717,475.13 and 491,245.63 is: 678,387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,550.71 : 717,475.13 = 491,245.63 : x
  2. Step 2: Convert to fraction form
    519,550.71/717,475.13 = 491,245.63/x
  3. Step 3: Cross multiply
    519,550.71x = 717,475.13 × 491,245.63
  4. Step 4: Simplify right side
    519,550.71x = 352,456,522,601.69
  5. Step 5: Solve for x
    x = 352,456,522,601.69/519,550.71
  6. Step 6: Final answer
    x = 678,387.15

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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.