Home / 815,280.75-1,221,589.47-495,530.41

Finding the Fourth Proportional to 815,280.75, 1,221,589.47 and 495,530.41

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Solution

The fourth proportional to 815,280.75, 1,221,589.47 and 495,530.41 is: 742,486.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,280.75 : 1,221,589.47 = 495,530.41 : x
  2. Step 2: Convert to fraction form
    815,280.75/1,221,589.47 = 495,530.41/x
  3. Step 3: Cross multiply
    815,280.75x = 1,221,589.47 × 495,530.41
  4. Step 4: Simplify right side
    815,280.75x = 605,334,730,920.78
  5. Step 5: Solve for x
    x = 605,334,730,920.78/815,280.75
  6. Step 6: Final answer
    x = 742,486.23

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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.