Home / 660,631.60-990,985.07-187,279.75

Finding the Fourth Proportional to 660,631.60, 990,985.07 and 187,279.75

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Solution

The fourth proportional to 660,631.60, 990,985.07 and 187,279.75 is: 280,930.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,631.60 : 990,985.07 = 187,279.75 : x
  2. Step 2: Convert to fraction form
    660,631.60/990,985.07 = 187,279.75/x
  3. Step 3: Cross multiply
    660,631.60x = 990,985.07 × 187,279.75
  4. Step 4: Simplify right side
    660,631.60x = 185,591,436,163.33
  5. Step 5: Solve for x
    x = 185,591,436,163.33/660,631.60
  6. Step 6: Final answer
    x = 280,930.30

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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.