Home / 658,531.08-987,774.12-279,207.72

Finding the Fourth Proportional to 658,531.08, 987,774.12 and 279,207.72

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Solution

The fourth proportional to 658,531.08, 987,774.12 and 279,207.72 is: 418,802.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,531.08 : 987,774.12 = 279,207.72 : x
  2. Step 2: Convert to fraction form
    658,531.08/987,774.12 = 279,207.72/x
  3. Step 3: Cross multiply
    658,531.08x = 987,774.12 × 279,207.72
  4. Step 4: Simplify right side
    658,531.08x = 275,794,159,920.21
  5. Step 5: Solve for x
    x = 275,794,159,920.21/658,531.08
  6. Step 6: Final answer
    x = 418,802.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.