Home / 819,627.12-1,229,659.56-258,672.24

Finding the Fourth Proportional to 819,627.12, 1,229,659.56 and 258,672.24

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Solution

The fourth proportional to 819,627.12, 1,229,659.56 and 258,672.24 is: 388,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,627.12 : 1,229,659.56 = 258,672.24 : x
  2. Step 2: Convert to fraction form
    819,627.12/1,229,659.56 = 258,672.24/x
  3. Step 3: Cross multiply
    819,627.12x = 1,229,659.56 × 258,672.24
  4. Step 4: Simplify right side
    819,627.12x = 318,078,792,822.61
  5. Step 5: Solve for x
    x = 318,078,792,822.61/819,627.12
  6. Step 6: Final answer
    x = 388,077.44

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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.