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Finding the Fourth Proportional to 659,600.70, 989,401.05 and 344,016.60

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Solution

The fourth proportional to 659,600.70, 989,401.05 and 344,016.60 is: 516,024.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,600.70 : 989,401.05 = 344,016.60 : x
  2. Step 2: Convert to fraction form
    659,600.70/989,401.05 = 344,016.60/x
  3. Step 3: Cross multiply
    659,600.70x = 989,401.05 × 344,016.60
  4. Step 4: Simplify right side
    659,600.70x = 340,370,385,257.43
  5. Step 5: Solve for x
    x = 340,370,385,257.43/659,600.70
  6. Step 6: Final answer
    x = 516,024.90

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Similar ratio
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1.5x scale

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.