Home / 1,278,136.80-1,917,205.20-717,098.40

Finding the Fourth Proportional to 1,278,136.80, 1,917,205.20 and 717,098.40

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Solution

The fourth proportional to 1,278,136.80, 1,917,205.20 and 717,098.40 is: 1,075,647.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,136.80 : 1,917,205.20 = 717,098.40 : x
  2. Step 2: Convert to fraction form
    1,278,136.80/1,917,205.20 = 717,098.40/x
  3. Step 3: Cross multiply
    1,278,136.80x = 1,917,205.20 × 717,098.40
  4. Step 4: Simplify right side
    1,278,136.80x = 1,374,824,781,391.68
  5. Step 5: Solve for x
    x = 1,374,824,781,391.68/1,278,136.80
  6. Step 6: Final answer
    x = 1,075,647.60

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Similar ratio
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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.