Home / 1,086,367-1,629,612.78-287,627.80

Finding the Fourth Proportional to 1,086,367, 1,629,612.78 and 287,627.80

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Solution

The fourth proportional to 1,086,367, 1,629,612.78 and 287,627.80 is: 431,458.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,367 : 1,629,612.78 = 287,627.80 : x
  2. Step 2: Convert to fraction form
    1,086,367/1,629,612.78 = 287,627.80/x
  3. Step 3: Cross multiply
    1,086,367x = 1,629,612.78 × 287,627.80
  4. Step 4: Simplify right side
    1,086,367x = 468,721,938,763.28
  5. Step 5: Solve for x
    x = 468,721,938,763.28/1,086,367
  6. Step 6: Final answer
    x = 431,458.19

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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.