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Finding the Fourth Proportional to 576,078.30, 794,981.25 and 317,957.22

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Solution

The fourth proportional to 576,078.30, 794,981.25 and 317,957.22 is: 438,777.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,078.30 : 794,981.25 = 317,957.22 : x
  2. Step 2: Convert to fraction form
    576,078.30/794,981.25 = 317,957.22/x
  3. Step 3: Cross multiply
    576,078.30x = 794,981.25 × 317,957.22
  4. Step 4: Simplify right side
    576,078.30x = 252,770,028,202.13
  5. Step 5: Solve for x
    x = 252,770,028,202.13/576,078.30
  6. Step 6: Final answer
    x = 438,777.21

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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.