Home / 1,138,695.30-1,706,876.55-665,136.90

Finding the Fourth Proportional to 1,138,695.30, 1,706,876.55 and 665,136.90

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Solution

The fourth proportional to 1,138,695.30, 1,706,876.55 and 665,136.90 is: 997,024.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,695.30 : 1,706,876.55 = 665,136.90 : x
  2. Step 2: Convert to fraction form
    1,138,695.30/1,706,876.55 = 665,136.90/x
  3. Step 3: Cross multiply
    1,138,695.30x = 1,706,876.55 × 665,136.90
  4. Step 4: Simplify right side
    1,138,695.30x = 1,135,306,577,149.70
  5. Step 5: Solve for x
    x = 1,135,306,577,149.70/1,138,695.30
  6. Step 6: Final answer
    x = 997,024.03

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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.