Home / 1,086,366-1,629,611.28-287,626.80

Finding the Fourth Proportional to 1,086,366, 1,629,611.28 and 287,626.80

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Solution

The fourth proportional to 1,086,366, 1,629,611.28 and 287,626.80 is: 431,456.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,366 : 1,629,611.28 = 287,626.80 : x
  2. Step 2: Convert to fraction form
    1,086,366/1,629,611.28 = 287,626.80/x
  3. Step 3: Cross multiply
    1,086,366x = 1,629,611.28 × 287,626.80
  4. Step 4: Simplify right side
    1,086,366x = 468,719,877,710.30
  5. Step 5: Solve for x
    x = 468,719,877,710.30/1,086,366
  6. Step 6: Final answer
    x = 431,456.69

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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.