Home / 1,281,974.76-1,921,387.44-719,828.28

Finding the Fourth Proportional to 1,281,974.76, 1,921,387.44 and 719,828.28

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Solution

The fourth proportional to 1,281,974.76, 1,921,387.44 and 719,828.28 is: 1,078,858.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,974.76 : 1,921,387.44 = 719,828.28 : x
  2. Step 2: Convert to fraction form
    1,281,974.76/1,921,387.44 = 719,828.28/x
  3. Step 3: Cross multiply
    1,281,974.76x = 1,921,387.44 × 719,828.28
  4. Step 4: Simplify right side
    1,281,974.76x = 1,383,069,016,148.80
  5. Step 5: Solve for x
    x = 1,383,069,016,148.80/1,281,974.76
  6. Step 6: Final answer
    x = 1,078,858.23

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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.