Home / 2,187,121.20-3,280,681.80-1,336,815.60

Finding the Fourth Proportional to 2,187,121.20, 3,280,681.80 and 1,336,815.60

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Solution

The fourth proportional to 2,187,121.20, 3,280,681.80 and 1,336,815.60 is: 2,005,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,121.20 : 3,280,681.80 = 1,336,815.60 : x
  2. Step 2: Convert to fraction form
    2,187,121.20/3,280,681.80 = 1,336,815.60/x
  3. Step 3: Cross multiply
    2,187,121.20x = 3,280,681.80 × 1,336,815.60
  4. Step 4: Simplify right side
    2,187,121.20x = 4,385,666,608,876.08
  5. Step 5: Solve for x
    x = 4,385,666,608,876.08/2,187,121.20
  6. Step 6: Final answer
    x = 2,005,223.40

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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.