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Finding the Fourth Proportional to 609,722.40, 914,583.60 and 189,040.80

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Solution

The fourth proportional to 609,722.40, 914,583.60 and 189,040.80 is: 283,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,722.40 : 914,583.60 = 189,040.80 : x
  2. Step 2: Convert to fraction form
    609,722.40/914,583.60 = 189,040.80/x
  3. Step 3: Cross multiply
    609,722.40x = 914,583.60 × 189,040.80
  4. Step 4: Simplify right side
    609,722.40x = 172,893,615,410.88
  5. Step 5: Solve for x
    x = 172,893,615,410.88/609,722.40
  6. Step 6: Final answer
    x = 283,561.20

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Similar ratio
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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.