Home / 687,185.92-948,284.44-381,259.04

Finding the Fourth Proportional to 687,185.92, 948,284.44 and 381,259.04

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Solution

The fourth proportional to 687,185.92, 948,284.44 and 381,259.04 is: 526,119.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,185.92 : 948,284.44 = 381,259.04 : x
  2. Step 2: Convert to fraction form
    687,185.92/948,284.44 = 381,259.04/x
  3. Step 3: Cross multiply
    687,185.92x = 948,284.44 × 381,259.04
  4. Step 4: Simplify right side
    687,185.92x = 361,542,016,658.90
  5. Step 5: Solve for x
    x = 361,542,016,658.90/687,185.92
  6. Step 6: Final answer
    x = 526,119.65

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Double scale
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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.