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Finding the Fourth Proportional to 719,347.46, 992,707.67 and 397,057.70

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Solution

The fourth proportional to 719,347.46, 992,707.67 and 397,057.70 is: 547,944.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,347.46 : 992,707.67 = 397,057.70 : x
  2. Step 2: Convert to fraction form
    719,347.46/992,707.67 = 397,057.70/x
  3. Step 3: Cross multiply
    719,347.46x = 992,707.67 × 397,057.70
  4. Step 4: Simplify right side
    719,347.46x = 394,162,217,273.73
  5. Step 5: Solve for x
    x = 394,162,217,273.73/719,347.46
  6. Step 6: Final answer
    x = 547,944.13

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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.