Home / 810,820.35-1,216,378.76-271,025.55

Finding the Fourth Proportional to 810,820.35, 1,216,378.76 and 271,025.55

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Solution

The fourth proportional to 810,820.35, 1,216,378.76 and 271,025.55 is: 406,587.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,820.35 : 1,216,378.76 = 271,025.55 : x
  2. Step 2: Convert to fraction form
    810,820.35/1,216,378.76 = 271,025.55/x
  3. Step 3: Cross multiply
    810,820.35x = 1,216,378.76 × 271,025.55
  4. Step 4: Simplify right side
    810,820.35x = 329,669,721,082.19
  5. Step 5: Solve for x
    x = 329,669,721,082.19/810,820.35
  6. Step 6: Final answer
    x = 406,587.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.