Home / 1,239,728.80-1,859,593.20-838,195.60

Finding the Fourth Proportional to 1,239,728.80, 1,859,593.20 and 838,195.60

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Solution

The fourth proportional to 1,239,728.80, 1,859,593.20 and 838,195.60 is: 1,257,293.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,728.80 : 1,859,593.20 = 838,195.60 : x
  2. Step 2: Convert to fraction form
    1,239,728.80/1,859,593.20 = 838,195.60/x
  3. Step 3: Cross multiply
    1,239,728.80x = 1,859,593.20 × 838,195.60
  4. Step 4: Simplify right side
    1,239,728.80x = 1,558,702,838,029.92
  5. Step 5: Solve for x
    x = 1,558,702,838,029.92/1,239,728.80
  6. Step 6: Final answer
    x = 1,257,293.40

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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.