Home / 812,005.43-1,217,454.55-411,874.64

Finding the Fourth Proportional to 812,005.43, 1,217,454.55 and 411,874.64

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Solution

The fourth proportional to 812,005.43, 1,217,454.55 and 411,874.64 is: 617,531.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,005.43 : 1,217,454.55 = 411,874.64 : x
  2. Step 2: Convert to fraction form
    812,005.43/1,217,454.55 = 411,874.64/x
  3. Step 3: Cross multiply
    812,005.43x = 1,217,454.55 × 411,874.64
  4. Step 4: Simplify right side
    812,005.43x = 501,438,652,438.24
  5. Step 5: Solve for x
    x = 501,438,652,438.24/812,005.43
  6. Step 6: Final answer
    x = 617,531.16

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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.