Home / 715,927.19-987,983.24-393,658.04

Finding the Fourth Proportional to 715,927.19, 987,983.24 and 393,658.04

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Solution

The fourth proportional to 715,927.19, 987,983.24 and 393,658.04 is: 543,250.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,927.19 : 987,983.24 = 393,658.04 : x
  2. Step 2: Convert to fraction form
    715,927.19/987,983.24 = 393,658.04/x
  3. Step 3: Cross multiply
    715,927.19x = 987,983.24 × 393,658.04
  4. Step 4: Simplify right side
    715,927.19x = 388,927,546,312.92
  5. Step 5: Solve for x
    x = 388,927,546,312.92/715,927.19
  6. Step 6: Final answer
    x = 543,250.14

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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.