Home / 715,910.22-987,947.24-393,617.50

Finding the Fourth Proportional to 715,910.22, 987,947.24 and 393,617.50

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Solution

The fourth proportional to 715,910.22, 987,947.24 and 393,617.50 is: 543,187.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,910.22 : 987,947.24 = 393,617.50 : x
  2. Step 2: Convert to fraction form
    715,910.22/987,947.24 = 393,617.50/x
  3. Step 3: Cross multiply
    715,910.22x = 987,947.24 × 393,617.50
  4. Step 4: Simplify right side
    715,910.22x = 388,873,318,302.74
  5. Step 5: Solve for x
    x = 388,873,318,302.74/715,910.22
  6. Step 6: Final answer
    x = 543,187.27

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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.