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Finding the Fourth Proportional to 719,463.54, 992,788.92 and 397,152.84

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Solution

The fourth proportional to 719,463.54, 992,788.92 and 397,152.84 is: 548,031.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,463.54 : 992,788.92 = 397,152.84 : x
  2. Step 2: Convert to fraction form
    719,463.54/992,788.92 = 397,152.84/x
  3. Step 3: Cross multiply
    719,463.54x = 992,788.92 × 397,152.84
  4. Step 4: Simplify right side
    719,463.54x = 394,288,939,098.53
  5. Step 5: Solve for x
    x = 394,288,939,098.53/719,463.54
  6. Step 6: Final answer
    x = 548,031.86

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Double scale
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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.