Home / 2,139,848.40-3,211,016.76-878,581.20

Finding the Fourth Proportional to 2,139,848.40, 3,211,016.76 and 878,581.20

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Solution

The fourth proportional to 2,139,848.40, 3,211,016.76 and 878,581.20 is: 1,318,382.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139,848.40 : 3,211,016.76 = 878,581.20 : x
  2. Step 2: Convert to fraction form
    2,139,848.40/3,211,016.76 = 878,581.20/x
  3. Step 3: Cross multiply
    2,139,848.40x = 3,211,016.76 × 878,581.20
  4. Step 4: Simplify right side
    2,139,848.40x = 2,821,138,958,220.91
  5. Step 5: Solve for x
    x = 2,821,138,958,220.91/2,139,848.40
  6. Step 6: Final answer
    x = 1,318,382.63

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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.