Home / 809,774.47-1,215,398.94-431,013.34

Finding the Fourth Proportional to 809,774.47, 1,215,398.94 and 431,013.34

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Solution

The fourth proportional to 809,774.47, 1,215,398.94 and 431,013.34 is: 646,912.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,774.47 : 1,215,398.94 = 431,013.34 : x
  2. Step 2: Convert to fraction form
    809,774.47/1,215,398.94 = 431,013.34/x
  3. Step 3: Cross multiply
    809,774.47x = 1,215,398.94 × 431,013.34
  4. Step 4: Simplify right side
    809,774.47x = 523,853,156,561.86
  5. Step 5: Solve for x
    x = 523,853,156,561.86/809,774.47
  6. Step 6: Final answer
    x = 646,912.41

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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.