Home / 1,220,339.40-1,830,489.48-378,891.96

Finding the Fourth Proportional to 1,220,339.40, 1,830,489.48 and 378,891.96

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Solution

The fourth proportional to 1,220,339.40, 1,830,489.48 and 378,891.96 is: 568,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,339.40 : 1,830,489.48 = 378,891.96 : x
  2. Step 2: Convert to fraction form
    1,220,339.40/1,830,489.48 = 378,891.96/x
  3. Step 3: Cross multiply
    1,220,339.40x = 1,830,489.48 × 378,891.96
  4. Step 4: Simplify right side
    1,220,339.40x = 693,557,746,836.58
  5. Step 5: Solve for x
    x = 693,557,746,836.58/1,220,339.40
  6. Step 6: Final answer
    x = 568,331.85

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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.