Home / 861,087.12-1,291,631.76-411,702.36

Finding the Fourth Proportional to 861,087.12, 1,291,631.76 and 411,702.36

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Solution

The fourth proportional to 861,087.12, 1,291,631.76 and 411,702.36 is: 617,554.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,087.12 : 1,291,631.76 = 411,702.36 : x
  2. Step 2: Convert to fraction form
    861,087.12/1,291,631.76 = 411,702.36/x
  3. Step 3: Cross multiply
    861,087.12x = 1,291,631.76 × 411,702.36
  4. Step 4: Simplify right side
    861,087.12x = 531,767,843,842.95
  5. Step 5: Solve for x
    x = 531,767,843,842.95/861,087.12
  6. Step 6: Final answer
    x = 617,554.06

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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.