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Finding the Fourth Proportional to 518,574.78, 777,862.20 and 124,590.78

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Solution

The fourth proportional to 518,574.78, 777,862.20 and 124,590.78 is: 186,886.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,574.78 : 777,862.20 = 124,590.78 : x
  2. Step 2: Convert to fraction form
    518,574.78/777,862.20 = 124,590.78/x
  3. Step 3: Cross multiply
    518,574.78x = 777,862.20 × 124,590.78
  4. Step 4: Simplify right side
    518,574.78x = 96,914,458,230.52
  5. Step 5: Solve for x
    x = 96,914,458,230.52/518,574.78
  6. Step 6: Final answer
    x = 186,886.18

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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.