Home / 787,734-1,087,067.20-448,220.88

Finding the Fourth Proportional to 787,734, 1,087,067.20 and 448,220.88

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Solution

The fourth proportional to 787,734, 1,087,067.20 and 448,220.88 is: 618,541.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,734 : 1,087,067.20 = 448,220.88 : x
  2. Step 2: Convert to fraction form
    787,734/1,087,067.20 = 448,220.88/x
  3. Step 3: Cross multiply
    787,734x = 1,087,067.20 × 448,220.88
  4. Step 4: Simplify right side
    787,734x = 487,246,217,003.14
  5. Step 5: Solve for x
    x = 487,246,217,003.14/787,734
  6. Step 6: Final answer
    x = 618,541.56

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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.