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Finding the Fourth Proportional to 719,535.40, 992,932.86 and 397,238.68

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Solution

The fourth proportional to 719,535.40, 992,932.86 and 397,238.68 is: 548,175.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,535.40 : 992,932.86 = 397,238.68 : x
  2. Step 2: Convert to fraction form
    719,535.40/992,932.86 = 397,238.68/x
  3. Step 3: Cross multiply
    719,535.40x = 992,932.86 × 397,238.68
  4. Step 4: Simplify right side
    719,535.40x = 394,431,338,635.03
  5. Step 5: Solve for x
    x = 394,431,338,635.03/719,535.40
  6. Step 6: Final answer
    x = 548,175.03

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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.