Home / 2,486,640.78-3,431,367.99-1,398,695.76

Finding the Fourth Proportional to 2,486,640.78, 3,431,367.99 and 1,398,695.76

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Solution

The fourth proportional to 2,486,640.78, 3,431,367.99 and 1,398,695.76 is: 1,930,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486,640.78 : 3,431,367.99 = 1,398,695.76 : x
  2. Step 2: Convert to fraction form
    2,486,640.78/3,431,367.99 = 1,398,695.76/x
  3. Step 3: Cross multiply
    2,486,640.78x = 3,431,367.99 × 1,398,695.76
  4. Step 4: Simplify right side
    2,486,640.78x = 4,799,439,858,612.72
  5. Step 5: Solve for x
    x = 4,799,439,858,612.72/2,486,640.78
  6. Step 6: Final answer
    x = 1,930,089.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.