Home / 687,516.53-948,765.61-381,595.55

Finding the Fourth Proportional to 687,516.53, 948,765.61 and 381,595.55

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Solution

The fourth proportional to 687,516.53, 948,765.61 and 381,595.55 is: 526,597.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,516.53 : 948,765.61 = 381,595.55 : x
  2. Step 2: Convert to fraction form
    687,516.53/948,765.61 = 381,595.55/x
  3. Step 3: Cross multiply
    687,516.53x = 948,765.61 × 381,595.55
  4. Step 4: Simplify right side
    687,516.53x = 362,044,734,769.04
  5. Step 5: Solve for x
    x = 362,044,734,769.04/687,516.53
  6. Step 6: Final answer
    x = 526,597.86

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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.