Home / 687,099.06-948,199.08-381,181.50

Finding the Fourth Proportional to 687,099.06, 948,199.08 and 381,181.50

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Solution

The fourth proportional to 687,099.06, 948,199.08 and 381,181.50 is: 526,031.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,099.06 : 948,199.08 = 381,181.50 : x
  2. Step 2: Convert to fraction form
    687,099.06/948,199.08 = 381,181.50/x
  3. Step 3: Cross multiply
    687,099.06x = 948,199.08 × 381,181.50
  4. Step 4: Simplify right side
    687,099.06x = 361,435,947,613.02
  5. Step 5: Solve for x
    x = 361,435,947,613.02/687,099.06
  6. Step 6: Final answer
    x = 526,031.79

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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.