Home / 805,801.88-1,205,720.94-486,138.90

Finding the Fourth Proportional to 805,801.88, 1,205,720.94 and 486,138.90

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Solution

The fourth proportional to 805,801.88, 1,205,720.94 and 486,138.90 is: 727,409.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,801.88 : 1,205,720.94 = 486,138.90 : x
  2. Step 2: Convert to fraction form
    805,801.88/1,205,720.94 = 486,138.90/x
  3. Step 3: Cross multiply
    805,801.88x = 1,205,720.94 × 486,138.90
  4. Step 4: Simplify right side
    805,801.88x = 586,147,851,478.57
  5. Step 5: Solve for x
    x = 586,147,851,478.57/805,801.88
  6. Step 6: Final answer
    x = 727,409.39

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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.