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Finding the Fourth Proportional to 719,429.97, 992,813.52 and 397,140.27

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Solution

The fourth proportional to 719,429.97, 992,813.52 and 397,140.27 is: 548,053.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,429.97 : 992,813.52 = 397,140.27 : x
  2. Step 2: Convert to fraction form
    719,429.97/992,813.52 = 397,140.27/x
  3. Step 3: Cross multiply
    719,429.97x = 992,813.52 × 397,140.27
  4. Step 4: Simplify right side
    719,429.97x = 394,286,229,392.45
  5. Step 5: Solve for x
    x = 394,286,229,392.45/719,429.97
  6. Step 6: Final answer
    x = 548,053.66

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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.