Home / 2,138,182.52-2,949,869.95-1,220,462.78

Finding the Fourth Proportional to 2,138,182.52, 2,949,869.95 and 1,220,462.78

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Solution

The fourth proportional to 2,138,182.52, 2,949,869.95 and 1,220,462.78 is: 1,683,769.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,182.52 : 2,949,869.95 = 1,220,462.78 : x
  2. Step 2: Convert to fraction form
    2,138,182.52/2,949,869.95 = 1,220,462.78/x
  3. Step 3: Cross multiply
    2,138,182.52x = 2,949,869.95 × 1,220,462.78
  4. Step 4: Simplify right side
    2,138,182.52x = 3,600,206,462,014.95
  5. Step 5: Solve for x
    x = 3,600,206,462,014.95/2,138,182.52
  6. Step 6: Final answer
    x = 1,683,769.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.