Home / 810,472.70-1,215,919.01-431,081.15

Finding the Fourth Proportional to 810,472.70, 1,215,919.01 and 431,081.15

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Solution

The fourth proportional to 810,472.70, 1,215,919.01 and 431,081.15 is: 646,733.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,472.70 : 1,215,919.01 = 431,081.15 : x
  2. Step 2: Convert to fraction form
    810,472.70/1,215,919.01 = 431,081.15/x
  3. Step 3: Cross multiply
    810,472.70x = 1,215,919.01 × 431,081.15
  4. Step 4: Simplify right side
    810,472.70x = 524,159,763,078.91
  5. Step 5: Solve for x
    x = 524,159,763,078.91/810,472.70
  6. Step 6: Final answer
    x = 646,733.40

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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.