Home / 743,149.75-1,025,512.34-420,862.16

Finding the Fourth Proportional to 743,149.75, 1,025,512.34 and 420,862.16

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Solution

The fourth proportional to 743,149.75, 1,025,512.34 and 420,862.16 is: 580,770.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,149.75 : 1,025,512.34 = 420,862.16 : x
  2. Step 2: Convert to fraction form
    743,149.75/1,025,512.34 = 420,862.16/x
  3. Step 3: Cross multiply
    743,149.75x = 1,025,512.34 × 420,862.16
  4. Step 4: Simplify right side
    743,149.75x = 431,599,331,287.18
  5. Step 5: Solve for x
    x = 431,599,331,287.18/743,149.75
  6. Step 6: Final answer
    x = 580,770.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.