Home / 687,025.81-948,209.04-381,200.59

Finding the Fourth Proportional to 687,025.81, 948,209.04 and 381,200.59

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Solution

The fourth proportional to 687,025.81, 948,209.04 and 381,200.59 is: 526,119.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,025.81 : 948,209.04 = 381,200.59 : x
  2. Step 2: Convert to fraction form
    687,025.81/948,209.04 = 381,200.59/x
  3. Step 3: Cross multiply
    687,025.81x = 948,209.04 × 381,200.59
  4. Step 4: Simplify right side
    687,025.81x = 361,457,845,491.33
  5. Step 5: Solve for x
    x = 361,457,845,491.33/687,025.81
  6. Step 6: Final answer
    x = 526,119.75

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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.