Home / 687,053.14-948,139.02-381,149.55

Finding the Fourth Proportional to 687,053.14, 948,139.02 and 381,149.55

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Solution

The fourth proportional to 687,053.14, 948,139.02 and 381,149.55 is: 525,989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,053.14 : 948,139.02 = 381,149.55 : x
  2. Step 2: Convert to fraction form
    687,053.14/948,139.02 = 381,149.55/x
  3. Step 3: Cross multiply
    687,053.14x = 948,139.02 × 381,149.55
  4. Step 4: Simplify right side
    687,053.14x = 361,382,760,810.44
  5. Step 5: Solve for x
    x = 361,382,760,810.44/687,053.14
  6. Step 6: Final answer
    x = 525,989.54

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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.