Home / 550,990.20-760,377.75-309,290.25

Finding the Fourth Proportional to 550,990.20, 760,377.75 and 309,290.25

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Solution

The fourth proportional to 550,990.20, 760,377.75 and 309,290.25 is: 426,826.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,990.20 : 760,377.75 = 309,290.25 : x
  2. Step 2: Convert to fraction form
    550,990.20/760,377.75 = 309,290.25/x
  3. Step 3: Cross multiply
    550,990.20x = 760,377.75 × 309,290.25
  4. Step 4: Simplify right side
    550,990.20x = 235,177,424,391.94
  5. Step 5: Solve for x
    x = 235,177,424,391.94/550,990.20
  6. Step 6: Final answer
    x = 426,826.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.