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Finding the Fourth Proportional to 719,005.44, 992,231.07 and 396,715.77

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Solution

The fourth proportional to 719,005.44, 992,231.07 and 396,715.77 is: 547,469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,005.44 : 992,231.07 = 396,715.77 : x
  2. Step 2: Convert to fraction form
    719,005.44/992,231.07 = 396,715.77/x
  3. Step 3: Cross multiply
    719,005.44x = 992,231.07 × 396,715.77
  4. Step 4: Simplify right side
    719,005.44x = 393,633,712,952.97
  5. Step 5: Solve for x
    x = 393,633,712,952.97/719,005.44
  6. Step 6: Final answer
    x = 547,469.73

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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.