Home / 810,473.70-1,215,920.51-431,082.15

Finding the Fourth Proportional to 810,473.70, 1,215,920.51 and 431,082.15

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Solution

The fourth proportional to 810,473.70, 1,215,920.51 and 431,082.15 is: 646,734.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,473.70 : 1,215,920.51 = 431,082.15 : x
  2. Step 2: Convert to fraction form
    810,473.70/1,215,920.51 = 431,082.15/x
  3. Step 3: Cross multiply
    810,473.70x = 1,215,920.51 × 431,082.15
  4. Step 4: Simplify right side
    810,473.70x = 524,161,627,679.90
  5. Step 5: Solve for x
    x = 524,161,627,679.90/810,473.70
  6. Step 6: Final answer
    x = 646,734.90

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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.