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Finding the Fourth Proportional to 719,479.92, 992,883.76 and 397,190.46

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Solution

The fourth proportional to 719,479.92, 992,883.76 and 397,190.46 is: 548,123.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,479.92 : 992,883.76 = 397,190.46 : x
  2. Step 2: Convert to fraction form
    719,479.92/992,883.76 = 397,190.46/x
  3. Step 3: Cross multiply
    719,479.92x = 992,883.76 × 397,190.46
  4. Step 4: Simplify right side
    719,479.92x = 394,363,957,360.93
  5. Step 5: Solve for x
    x = 394,363,957,360.93/719,479.92
  6. Step 6: Final answer
    x = 548,123.65

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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.