Home / 687,034.20-948,112.88-381,130.62

Finding the Fourth Proportional to 687,034.20, 948,112.88 and 381,130.62

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Solution

The fourth proportional to 687,034.20, 948,112.88 and 381,130.62 is: 525,963.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,034.20 : 948,112.88 = 381,130.62 : x
  2. Step 2: Convert to fraction form
    687,034.20/948,112.88 = 381,130.62/x
  3. Step 3: Cross multiply
    687,034.20x = 948,112.88 × 381,130.62
  4. Step 4: Simplify right side
    687,034.20x = 361,354,849,784.39
  5. Step 5: Solve for x
    x = 361,354,849,784.39/687,034.20
  6. Step 6: Final answer
    x = 525,963.41

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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.