Home / 677,685.40-1,015,361.70-440,906.20

Finding the Fourth Proportional to 677,685.40, 1,015,361.70 and 440,906.20

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Solution

The fourth proportional to 677,685.40, 1,015,361.70 and 440,906.20 is: 660,600.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,685.40 : 1,015,361.70 = 440,906.20 : x
  2. Step 2: Convert to fraction form
    677,685.40/1,015,361.70 = 440,906.20/x
  3. Step 3: Cross multiply
    677,685.40x = 1,015,361.70 × 440,906.20
  4. Step 4: Simplify right side
    677,685.40x = 447,679,268,772.54
  5. Step 5: Solve for x
    x = 447,679,268,772.54/677,685.40
  6. Step 6: Final answer
    x = 660,600.43

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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.