Home / 1,239,616.80-1,859,425.20-838,083.60

Finding the Fourth Proportional to 1,239,616.80, 1,859,425.20 and 838,083.60

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Solution

The fourth proportional to 1,239,616.80, 1,859,425.20 and 838,083.60 is: 1,257,125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,616.80 : 1,859,425.20 = 838,083.60 : x
  2. Step 2: Convert to fraction form
    1,239,616.80/1,859,425.20 = 838,083.60/x
  3. Step 3: Cross multiply
    1,239,616.80x = 1,859,425.20 × 838,083.60
  4. Step 4: Simplify right side
    1,239,616.80x = 1,558,353,765,546.72
  5. Step 5: Solve for x
    x = 1,558,353,765,546.72/1,239,616.80
  6. Step 6: Final answer
    x = 1,257,125.40

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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.