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Finding the Fourth Proportional to 719,532.66, 992,956.55 and 397,243.38

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Solution

The fourth proportional to 719,532.66, 992,956.55 and 397,243.38 is: 548,196.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,532.66 : 992,956.55 = 397,243.38 : x
  2. Step 2: Convert to fraction form
    719,532.66/992,956.55 = 397,243.38/x
  3. Step 3: Cross multiply
    719,532.66x = 992,956.55 × 397,243.38
  4. Step 4: Simplify right side
    719,532.66x = 394,445,414,128.92
  5. Step 5: Solve for x
    x = 394,445,414,128.92/719,532.66
  6. Step 6: Final answer
    x = 548,196.68

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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.