Home / 820,276.80-1,229,540.40-314,642.40

Finding the Fourth Proportional to 820,276.80, 1,229,540.40 and 314,642.40

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Solution

The fourth proportional to 820,276.80, 1,229,540.40 and 314,642.40 is: 471,628.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,276.80 : 1,229,540.40 = 314,642.40 : x
  2. Step 2: Convert to fraction form
    820,276.80/1,229,540.40 = 314,642.40/x
  3. Step 3: Cross multiply
    820,276.80x = 1,229,540.40 × 314,642.40
  4. Step 4: Simplify right side
    820,276.80x = 386,865,542,352.96
  5. Step 5: Solve for x
    x = 386,865,542,352.96/820,276.80
  6. Step 6: Final answer
    x = 471,628.04

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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.