Home / 804,971.20-1,207,456.80-431,723.20

Finding the Fourth Proportional to 804,971.20, 1,207,456.80 and 431,723.20

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Solution

The fourth proportional to 804,971.20, 1,207,456.80 and 431,723.20 is: 647,584.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,971.20 : 1,207,456.80 = 431,723.20 : x
  2. Step 2: Convert to fraction form
    804,971.20/1,207,456.80 = 431,723.20/x
  3. Step 3: Cross multiply
    804,971.20x = 1,207,456.80 × 431,723.20
  4. Step 4: Simplify right side
    804,971.20x = 521,287,113,557.76
  5. Step 5: Solve for x
    x = 521,287,113,557.76/804,971.20
  6. Step 6: Final answer
    x = 647,584.80

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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.