Home / 1,245,288.80-1,867,933.20-1,087,824.80

Finding the Fourth Proportional to 1,245,288.80, 1,867,933.20 and 1,087,824.80

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Solution

The fourth proportional to 1,245,288.80, 1,867,933.20 and 1,087,824.80 is: 1,631,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,288.80 : 1,867,933.20 = 1,087,824.80 : x
  2. Step 2: Convert to fraction form
    1,245,288.80/1,867,933.20 = 1,087,824.80/x
  3. Step 3: Cross multiply
    1,245,288.80x = 1,867,933.20 × 1,087,824.80
  4. Step 4: Simplify right side
    1,245,288.80x = 2,031,984,059,703.36
  5. Step 5: Solve for x
    x = 2,031,984,059,703.36/1,245,288.80
  6. Step 6: Final answer
    x = 1,631,737.20

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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.