Home / 820,727.20-1,229,017.20-538,717.60

Finding the Fourth Proportional to 820,727.20, 1,229,017.20 and 538,717.60

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Solution

The fourth proportional to 820,727.20, 1,229,017.20 and 538,717.60 is: 806,715.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,727.20 : 1,229,017.20 = 538,717.60 : x
  2. Step 2: Convert to fraction form
    820,727.20/1,229,017.20 = 538,717.60/x
  3. Step 3: Cross multiply
    820,727.20x = 1,229,017.20 × 538,717.60
  4. Step 4: Simplify right side
    820,727.20x = 662,093,196,342.72
  5. Step 5: Solve for x
    x = 662,093,196,342.72/820,727.20
  6. Step 6: Final answer
    x = 806,715.31

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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.