Home / 747,643.40-1,120,128.60-454,990.40

Finding the Fourth Proportional to 747,643.40, 1,120,128.60 and 454,990.40

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Solution

The fourth proportional to 747,643.40, 1,120,128.60 and 454,990.40 is: 681,672.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,643.40 : 1,120,128.60 = 454,990.40 : x
  2. Step 2: Convert to fraction form
    747,643.40/1,120,128.60 = 454,990.40/x
  3. Step 3: Cross multiply
    747,643.40x = 1,120,128.60 × 454,990.40
  4. Step 4: Simplify right side
    747,643.40x = 509,647,759,765.44
  5. Step 5: Solve for x
    x = 509,647,759,765.44/747,643.40
  6. Step 6: Final answer
    x = 681,672.25

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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.