Home / 715,584.15-987,524.24-393,302.43

Finding the Fourth Proportional to 715,584.15, 987,524.24 and 393,302.43

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Solution

The fourth proportional to 715,584.15, 987,524.24 and 393,302.43 is: 542,767.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,584.15 : 987,524.24 = 393,302.43 : x
  2. Step 2: Convert to fraction form
    715,584.15/987,524.24 = 393,302.43/x
  3. Step 3: Cross multiply
    715,584.15x = 987,524.24 × 393,302.43
  4. Step 4: Simplify right side
    715,584.15x = 388,395,681,309.39
  5. Step 5: Solve for x
    x = 388,395,681,309.39/715,584.15
  6. Step 6: Final answer
    x = 542,767.31

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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.