Home / 820,010.80-1,229,141.40-314,376.40

Finding the Fourth Proportional to 820,010.80, 1,229,141.40 and 314,376.40

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Solution

The fourth proportional to 820,010.80, 1,229,141.40 and 314,376.40 is: 471,229.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,010.80 : 1,229,141.40 = 314,376.40 : x
  2. Step 2: Convert to fraction form
    820,010.80/1,229,141.40 = 314,376.40/x
  3. Step 3: Cross multiply
    820,010.80x = 1,229,141.40 × 314,376.40
  4. Step 4: Simplify right side
    820,010.80x = 386,413,048,422.96
  5. Step 5: Solve for x
    x = 386,413,048,422.96/820,010.80
  6. Step 6: Final answer
    x = 471,229.22

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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.