Home / 1,285,387.29-1,928,087.79-386,822.88

Finding the Fourth Proportional to 1,285,387.29, 1,928,087.79 and 386,822.88

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Solution

The fourth proportional to 1,285,387.29, 1,928,087.79 and 386,822.88 is: 580,236.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,387.29 : 1,928,087.79 = 386,822.88 : x
  2. Step 2: Convert to fraction form
    1,285,387.29/1,928,087.79 = 386,822.88/x
  3. Step 3: Cross multiply
    1,285,387.29x = 1,928,087.79 × 386,822.88
  4. Step 4: Simplify right side
    1,285,387.29x = 745,828,471,820.64
  5. Step 5: Solve for x
    x = 745,828,471,820.64/1,285,387.29
  6. Step 6: Final answer
    x = 580,236.38

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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.