Home / 1,761,712.40-2,643,605.40-639,894.80

Finding the Fourth Proportional to 1,761,712.40, 2,643,605.40 and 639,894.80

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Solution

The fourth proportional to 1,761,712.40, 2,643,605.40 and 639,894.80 is: 960,218.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,712.40 : 2,643,605.40 = 639,894.80 : x
  2. Step 2: Convert to fraction form
    1,761,712.40/2,643,605.40 = 639,894.80/x
  3. Step 3: Cross multiply
    1,761,712.40x = 2,643,605.40 × 639,894.80
  4. Step 4: Simplify right side
    1,761,712.40x = 1,691,629,348,711.92
  5. Step 5: Solve for x
    x = 1,691,629,348,711.92/1,761,712.40
  6. Step 6: Final answer
    x = 960,218.79

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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.