Home / 879,139.20-1,315,209.60-762,110.40

Finding the Fourth Proportional to 879,139.20, 1,315,209.60 and 762,110.40

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Solution

The fourth proportional to 879,139.20, 1,315,209.60 and 762,110.40 is: 1,140,132.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,139.20 : 1,315,209.60 = 762,110.40 : x
  2. Step 2: Convert to fraction form
    879,139.20/1,315,209.60 = 762,110.40/x
  3. Step 3: Cross multiply
    879,139.20x = 1,315,209.60 × 762,110.40
  4. Step 4: Simplify right side
    879,139.20x = 1,002,334,914,339.84
  5. Step 5: Solve for x
    x = 1,002,334,914,339.84/879,139.20
  6. Step 6: Final answer
    x = 1,140,132.20

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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.