Home / 2,190,920.80-3,286,381.20-1,011,272.80

Finding the Fourth Proportional to 2,190,920.80, 3,286,381.20 and 1,011,272.80

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Solution

The fourth proportional to 2,190,920.80, 3,286,381.20 and 1,011,272.80 is: 1,516,909.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190,920.80 : 3,286,381.20 = 1,011,272.80 : x
  2. Step 2: Convert to fraction form
    2,190,920.80/3,286,381.20 = 1,011,272.80/x
  3. Step 3: Cross multiply
    2,190,920.80x = 3,286,381.20 × 1,011,272.80
  4. Step 4: Simplify right side
    2,190,920.80x = 3,323,427,917,991.36
  5. Step 5: Solve for x
    x = 3,323,427,917,991.36/2,190,920.80
  6. Step 6: Final answer
    x = 1,516,909.20

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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.