Home / 1,222,665.98-1,687,194.77-678,759.55

Finding the Fourth Proportional to 1,222,665.98, 1,687,194.77 and 678,759.55

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Solution

The fourth proportional to 1,222,665.98, 1,687,194.77 and 678,759.55 is: 936,641.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,665.98 : 1,687,194.77 = 678,759.55 : x
  2. Step 2: Convert to fraction form
    1,222,665.98/1,687,194.77 = 678,759.55/x
  3. Step 3: Cross multiply
    1,222,665.98x = 1,687,194.77 × 678,759.55
  4. Step 4: Simplify right side
    1,222,665.98x = 1,145,199,555,235.77
  5. Step 5: Solve for x
    x = 1,145,199,555,235.77/1,222,665.98
  6. Step 6: Final answer
    x = 936,641.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.