Home / 2,187,987.28-3,019,415.88-1,221,106.96

Finding the Fourth Proportional to 2,187,987.28, 3,019,415.88 and 1,221,106.96

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Solution

The fourth proportional to 2,187,987.28, 3,019,415.88 and 1,221,106.96 is: 1,685,123.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,987.28 : 3,019,415.88 = 1,221,106.96 : x
  2. Step 2: Convert to fraction form
    2,187,987.28/3,019,415.88 = 1,221,106.96/x
  3. Step 3: Cross multiply
    2,187,987.28x = 3,019,415.88 × 1,221,106.96
  4. Step 4: Simplify right side
    2,187,987.28x = 3,687,029,746,202.52
  5. Step 5: Solve for x
    x = 3,687,029,746,202.52/2,187,987.28
  6. Step 6: Final answer
    x = 1,685,123.94

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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.