Home / 765,121.76-1,055,996.16-442,776.32

Finding the Fourth Proportional to 765,121.76, 1,055,996.16 and 442,776.32

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Solution

The fourth proportional to 765,121.76, 1,055,996.16 and 442,776.32 is: 611,105.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,121.76 : 1,055,996.16 = 442,776.32 : x
  2. Step 2: Convert to fraction form
    765,121.76/1,055,996.16 = 442,776.32/x
  3. Step 3: Cross multiply
    765,121.76x = 1,055,996.16 × 442,776.32
  4. Step 4: Simplify right side
    765,121.76x = 467,570,093,658.93
  5. Step 5: Solve for x
    x = 467,570,093,658.93/765,121.76
  6. Step 6: Final answer
    x = 611,105.47

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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.