Home / 1,242,191.22-1,863,287.28-389,329.05

Finding the Fourth Proportional to 1,242,191.22, 1,863,287.28 and 389,329.05

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Solution

The fourth proportional to 1,242,191.22, 1,863,287.28 and 389,329.05 is: 583,993.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,191.22 : 1,863,287.28 = 389,329.05 : x
  2. Step 2: Convert to fraction form
    1,242,191.22/1,863,287.28 = 389,329.05/x
  3. Step 3: Cross multiply
    1,242,191.22x = 1,863,287.28 × 389,329.05
  4. Step 4: Simplify right side
    1,242,191.22x = 725,431,866,599.48
  5. Step 5: Solve for x
    x = 725,431,866,599.48/1,242,191.22
  6. Step 6: Final answer
    x = 583,993.72

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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.