Home / 861,026.31-1,290,702.11-411,630.75

Finding the Fourth Proportional to 861,026.31, 1,290,702.11 and 411,630.75

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Solution

The fourth proportional to 861,026.31, 1,290,702.11 and 411,630.75 is: 617,045.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,026.31 : 1,290,702.11 = 411,630.75 : x
  2. Step 2: Convert to fraction form
    861,026.31/1,290,702.11 = 411,630.75/x
  3. Step 3: Cross multiply
    861,026.31x = 1,290,702.11 × 411,630.75
  4. Step 4: Simplify right side
    861,026.31x = 531,292,675,507.73
  5. Step 5: Solve for x
    x = 531,292,675,507.73/861,026.31
  6. Step 6: Final answer
    x = 617,045.81

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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.