Home / 809,766.06-1,215,386.01-431,004.66

Finding the Fourth Proportional to 809,766.06, 1,215,386.01 and 431,004.66

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Solution

The fourth proportional to 809,766.06, 1,215,386.01 and 431,004.66 is: 646,899.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,766.06 : 1,215,386.01 = 431,004.66 : x
  2. Step 2: Convert to fraction form
    809,766.06/1,215,386.01 = 431,004.66/x
  3. Step 3: Cross multiply
    809,766.06x = 1,215,386.01 × 431,004.66
  4. Step 4: Simplify right side
    809,766.06x = 523,837,034,008.81
  5. Step 5: Solve for x
    x = 523,837,034,008.81/809,766.06
  6. Step 6: Final answer
    x = 646,899.22

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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.