Home / 1,187,999.90-1,781,999.85-810,086.30

Finding the Fourth Proportional to 1,187,999.90, 1,781,999.85 and 810,086.30

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Solution

The fourth proportional to 1,187,999.90, 1,781,999.85 and 810,086.30 is: 1,215,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,999.90 : 1,781,999.85 = 810,086.30 : x
  2. Step 2: Convert to fraction form
    1,187,999.90/1,781,999.85 = 810,086.30/x
  3. Step 3: Cross multiply
    1,187,999.90x = 1,781,999.85 × 810,086.30
  4. Step 4: Simplify right side
    1,187,999.90x = 1,443,573,665,087.06
  5. Step 5: Solve for x
    x = 1,443,573,665,087.06/1,187,999.90
  6. Step 6: Final answer
    x = 1,215,129.45

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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.