Home / 765,103.10-1,055,825.21-442,806.73

Finding the Fourth Proportional to 765,103.10, 1,055,825.21 and 442,806.73

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Solution

The fourth proportional to 765,103.10, 1,055,825.21 and 442,806.73 is: 611,063.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,103.10 : 1,055,825.21 = 442,806.73 : x
  2. Step 2: Convert to fraction form
    765,103.10/1,055,825.21 = 442,806.73/x
  3. Step 3: Cross multiply
    765,103.10x = 1,055,825.21 × 442,806.73
  4. Step 4: Simplify right side
    765,103.10x = 467,526,507,159.12
  5. Step 5: Solve for x
    x = 467,526,507,159.12/765,103.10
  6. Step 6: Final answer
    x = 611,063.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.