Home / 855,399.20-1,281,716.40-539,290.40

Finding the Fourth Proportional to 855,399.20, 1,281,716.40 and 539,290.40

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Solution

The fourth proportional to 855,399.20, 1,281,716.40 and 539,290.40 is: 808,064.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,399.20 : 1,281,716.40 = 539,290.40 : x
  2. Step 2: Convert to fraction form
    855,399.20/1,281,716.40 = 539,290.40/x
  3. Step 3: Cross multiply
    855,399.20x = 1,281,716.40 × 539,290.40
  4. Step 4: Simplify right side
    855,399.20x = 691,217,350,042.56
  5. Step 5: Solve for x
    x = 691,217,350,042.56/855,399.20
  6. Step 6: Final answer
    x = 808,064.06

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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.