Home / 1,092,139.80-1,638,209.70-826,419.30

Finding the Fourth Proportional to 1,092,139.80, 1,638,209.70 and 826,419.30

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Solution

The fourth proportional to 1,092,139.80, 1,638,209.70 and 826,419.30 is: 1,239,628.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,139.80 : 1,638,209.70 = 826,419.30 : x
  2. Step 2: Convert to fraction form
    1,092,139.80/1,638,209.70 = 826,419.30/x
  3. Step 3: Cross multiply
    1,092,139.80x = 1,638,209.70 × 826,419.30
  4. Step 4: Simplify right side
    1,092,139.80x = 1,353,848,113,527.21
  5. Step 5: Solve for x
    x = 1,353,848,113,527.21/1,092,139.80
  6. Step 6: Final answer
    x = 1,239,628.95

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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.