Home / 687,515.53-948,764.23-381,594.55

Finding the Fourth Proportional to 687,515.53, 948,764.23 and 381,594.55

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Solution

The fourth proportional to 687,515.53, 948,764.23 and 381,594.55 is: 526,596.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,515.53 : 948,764.23 = 381,594.55 : x
  2. Step 2: Convert to fraction form
    687,515.53/948,764.23 = 381,594.55/x
  3. Step 3: Cross multiply
    687,515.53x = 948,764.23 × 381,594.55
  4. Step 4: Simplify right side
    687,515.53x = 362,043,259,402.95
  5. Step 5: Solve for x
    x = 362,043,259,402.95/687,515.53
  6. Step 6: Final answer
    x = 526,596.48

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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.