Home / 2,155,856.15-2,974,330.26-1,381,913.78

Finding the Fourth Proportional to 2,155,856.15, 2,974,330.26 and 1,381,913.78

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Solution

The fourth proportional to 2,155,856.15, 2,974,330.26 and 1,381,913.78 is: 1,906,559.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155,856.15 : 2,974,330.26 = 1,381,913.78 : x
  2. Step 2: Convert to fraction form
    2,155,856.15/2,974,330.26 = 1,381,913.78/x
  3. Step 3: Cross multiply
    2,155,856.15x = 2,974,330.26 × 1,381,913.78
  4. Step 4: Simplify right side
    2,155,856.15x = 4,110,267,972,564.98
  5. Step 5: Solve for x
    x = 4,110,267,972,564.98/2,155,856.15
  6. Step 6: Final answer
    x = 1,906,559.48

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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.