Home / 1,489,125.40-2,231,225.70-856,936.60

Finding the Fourth Proportional to 1,489,125.40, 2,231,225.70 and 856,936.60

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Solution

The fourth proportional to 1,489,125.40, 2,231,225.70 and 856,936.60 is: 1,283,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,125.40 : 2,231,225.70 = 856,936.60 : x
  2. Step 2: Convert to fraction form
    1,489,125.40/2,231,225.70 = 856,936.60/x
  3. Step 3: Cross multiply
    1,489,125.40x = 2,231,225.70 × 856,936.60
  4. Step 4: Simplify right side
    1,489,125.40x = 1,912,018,965,190.62
  5. Step 5: Solve for x
    x = 1,912,018,965,190.62/1,489,125.40
  6. Step 6: Final answer
    x = 1,283,987.88

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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.