Home / 1,239,616.20-1,859,424.30-861,702.60

Finding the Fourth Proportional to 1,239,616.20, 1,859,424.30 and 861,702.60

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Solution

The fourth proportional to 1,239,616.20, 1,859,424.30 and 861,702.60 is: 1,292,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,616.20 : 1,859,424.30 = 861,702.60 : x
  2. Step 2: Convert to fraction form
    1,239,616.20/1,859,424.30 = 861,702.60/x
  3. Step 3: Cross multiply
    1,239,616.20x = 1,859,424.30 × 861,702.60
  4. Step 4: Simplify right side
    1,239,616.20x = 1,602,270,753,813.18
  5. Step 5: Solve for x
    x = 1,602,270,753,813.18/1,239,616.20
  6. Step 6: Final answer
    x = 1,292,553.90

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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.