Home / 1,489,119.40-2,231,216.70-856,930.60

Finding the Fourth Proportional to 1,489,119.40, 2,231,216.70 and 856,930.60

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Solution

The fourth proportional to 1,489,119.40, 2,231,216.70 and 856,930.60 is: 1,283,978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,119.40 : 2,231,216.70 = 856,930.60 : x
  2. Step 2: Convert to fraction form
    1,489,119.40/2,231,216.70 = 856,930.60/x
  3. Step 3: Cross multiply
    1,489,119.40x = 2,231,216.70 × 856,930.60
  4. Step 4: Simplify right side
    1,489,119.40x = 1,911,997,865,461.02
  5. Step 5: Solve for x
    x = 1,911,997,865,461.02/1,489,119.40
  6. Step 6: Final answer
    x = 1,283,978.88

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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.