Home / 819,245.20-1,229,040.60-345,686.80

Finding the Fourth Proportional to 819,245.20, 1,229,040.60 and 345,686.80

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Solution

The fourth proportional to 819,245.20, 1,229,040.60 and 345,686.80 is: 518,603.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,245.20 : 1,229,040.60 = 345,686.80 : x
  2. Step 2: Convert to fraction form
    819,245.20/1,229,040.60 = 345,686.80/x
  3. Step 3: Cross multiply
    819,245.20x = 1,229,040.60 × 345,686.80
  4. Step 4: Simplify right side
    819,245.20x = 424,863,112,084.08
  5. Step 5: Solve for x
    x = 424,863,112,084.08/819,245.20
  6. Step 6: Final answer
    x = 518,603.11

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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.