Home / 1,139,204.40-1,708,806.60-1,121,489.70

Finding the Fourth Proportional to 1,139,204.40, 1,708,806.60 and 1,121,489.70

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Solution

The fourth proportional to 1,139,204.40, 1,708,806.60 and 1,121,489.70 is: 1,682,234.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,204.40 : 1,708,806.60 = 1,121,489.70 : x
  2. Step 2: Convert to fraction form
    1,139,204.40/1,708,806.60 = 1,121,489.70/x
  3. Step 3: Cross multiply
    1,139,204.40x = 1,708,806.60 × 1,121,489.70
  4. Step 4: Simplify right side
    1,139,204.40x = 1,916,409,001,192.02
  5. Step 5: Solve for x
    x = 1,916,409,001,192.02/1,139,204.40
  6. Step 6: Final answer
    x = 1,682,234.55

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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.