Home / 879,139.70-1,315,210.35-762,110.90

Finding the Fourth Proportional to 879,139.70, 1,315,210.35 and 762,110.90

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Solution

The fourth proportional to 879,139.70, 1,315,210.35 and 762,110.90 is: 1,140,132.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,139.70 : 1,315,210.35 = 762,110.90 : x
  2. Step 2: Convert to fraction form
    879,139.70/1,315,210.35 = 762,110.90/x
  3. Step 3: Cross multiply
    879,139.70x = 1,315,210.35 × 762,110.90
  4. Step 4: Simplify right side
    879,139.70x = 1,002,336,143,527.82
  5. Step 5: Solve for x
    x = 1,002,336,143,527.82/879,139.70
  6. Step 6: Final answer
    x = 1,140,132.95

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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.