Home / 820,059.80-1,230,084.45-280,055.61

Finding the Fourth Proportional to 820,059.80, 1,230,084.45 and 280,055.61

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Solution

The fourth proportional to 820,059.80, 1,230,084.45 and 280,055.61 is: 420,081.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,059.80 : 1,230,084.45 = 280,055.61 : x
  2. Step 2: Convert to fraction form
    820,059.80/1,230,084.45 = 280,055.61/x
  3. Step 3: Cross multiply
    820,059.80x = 1,230,084.45 × 280,055.61
  4. Step 4: Simplify right side
    820,059.80x = 344,492,050,996.26
  5. Step 5: Solve for x
    x = 344,492,050,996.26/820,059.80
  6. Step 6: Final answer
    x = 420,081.62

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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.