Home / 1,927,145.80-2,887,716.30-728,414.20

Finding the Fourth Proportional to 1,927,145.80, 2,887,716.30 and 728,414.20

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Solution

The fourth proportional to 1,927,145.80, 2,887,716.30 and 728,414.20 is: 1,091,486.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927,145.80 : 2,887,716.30 = 728,414.20 : x
  2. Step 2: Convert to fraction form
    1,927,145.80/2,887,716.30 = 728,414.20/x
  3. Step 3: Cross multiply
    1,927,145.80x = 2,887,716.30 × 728,414.20
  4. Step 4: Simplify right side
    1,927,145.80x = 2,103,453,558,491.46
  5. Step 5: Solve for x
    x = 2,103,453,558,491.46/1,927,145.80
  6. Step 6: Final answer
    x = 1,091,486.47

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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.