Home / 1,200,906.80-1,657,087.71-717,369.30

Finding the Fourth Proportional to 1,200,906.80, 1,657,087.71 and 717,369.30

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Solution

The fourth proportional to 1,200,906.80, 1,657,087.71 and 717,369.30 is: 989,871.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,906.80 : 1,657,087.71 = 717,369.30 : x
  2. Step 2: Convert to fraction form
    1,200,906.80/1,657,087.71 = 717,369.30/x
  3. Step 3: Cross multiply
    1,200,906.80x = 1,657,087.71 × 717,369.30
  4. Step 4: Simplify right side
    1,200,906.80x = 1,188,743,850,561.30
  5. Step 5: Solve for x
    x = 1,188,743,850,561.30/1,200,906.80
  6. Step 6: Final answer
    x = 989,871.86

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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.