Home / 831,664.80-1,247,497.20-660,422.70

Finding the Fourth Proportional to 831,664.80, 1,247,497.20 and 660,422.70

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Solution

The fourth proportional to 831,664.80, 1,247,497.20 and 660,422.70 is: 990,634.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,664.80 : 1,247,497.20 = 660,422.70 : x
  2. Step 2: Convert to fraction form
    831,664.80/1,247,497.20 = 660,422.70/x
  3. Step 3: Cross multiply
    831,664.80x = 1,247,497.20 × 660,422.70
  4. Step 4: Simplify right side
    831,664.80x = 823,875,469,066.44
  5. Step 5: Solve for x
    x = 823,875,469,066.44/831,664.80
  6. Step 6: Final answer
    x = 990,634.05

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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.