Home / 687,143.43-948,371.75-381,318.04

Finding the Fourth Proportional to 687,143.43, 948,371.75 and 381,318.04

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Solution

The fourth proportional to 687,143.43, 948,371.75 and 381,318.04 is: 526,282.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,143.43 : 948,371.75 = 381,318.04 : x
  2. Step 2: Convert to fraction form
    687,143.43/948,371.75 = 381,318.04/x
  3. Step 3: Cross multiply
    687,143.43x = 948,371.75 × 381,318.04
  4. Step 4: Simplify right side
    687,143.43x = 361,631,259,741.25
  5. Step 5: Solve for x
    x = 361,631,259,741.25/687,143.43
  6. Step 6: Final answer
    x = 526,282.06

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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.