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Finding the Fourth Proportional to 992,752.56, 1,489,620.96 and 393,700.47

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Solution

The fourth proportional to 992,752.56, 1,489,620.96 and 393,700.47 is: 590,745.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,752.56 : 1,489,620.96 = 393,700.47 : x
  2. Step 2: Convert to fraction form
    992,752.56/1,489,620.96 = 393,700.47/x
  3. Step 3: Cross multiply
    992,752.56x = 1,489,620.96 × 393,700.47
  4. Step 4: Simplify right side
    992,752.56x = 586,464,472,073.85
  5. Step 5: Solve for x
    x = 586,464,472,073.85/992,752.56
  6. Step 6: Final answer
    x = 590,745.87

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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.