Home / 807,839.20-1,211,886.80-275,410.40

Finding the Fourth Proportional to 807,839.20, 1,211,886.80 and 275,410.40

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Solution

The fourth proportional to 807,839.20, 1,211,886.80 and 275,410.40 is: 413,159.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,839.20 : 1,211,886.80 = 275,410.40 : x
  2. Step 2: Convert to fraction form
    807,839.20/1,211,886.80 = 275,410.40/x
  3. Step 3: Cross multiply
    807,839.20x = 1,211,886.80 × 275,410.40
  4. Step 4: Simplify right side
    807,839.20x = 333,766,228,342.72
  5. Step 5: Solve for x
    x = 333,766,228,342.72/807,839.20
  6. Step 6: Final answer
    x = 413,159.24

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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.