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Finding the Fourth Proportional to 440,459.80, 660,689.70 and 366,976.60

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Solution

The fourth proportional to 440,459.80, 660,689.70 and 366,976.60 is: 550,464.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,459.80 : 660,689.70 = 366,976.60 : x
  2. Step 2: Convert to fraction form
    440,459.80/660,689.70 = 366,976.60/x
  3. Step 3: Cross multiply
    440,459.80x = 660,689.70 × 366,976.60
  4. Step 4: Simplify right side
    440,459.80x = 242,457,659,761.02
  5. Step 5: Solve for x
    x = 242,457,659,761.02/440,459.80
  6. Step 6: Final answer
    x = 550,464.90

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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.