Home / 1,200,915.97-1,657,100.34-717,378.46

Finding the Fourth Proportional to 1,200,915.97, 1,657,100.34 and 717,378.46

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Solution

The fourth proportional to 1,200,915.97, 1,657,100.34 and 717,378.46 is: 989,884.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,915.97 : 1,657,100.34 = 717,378.46 : x
  2. Step 2: Convert to fraction form
    1,200,915.97/1,657,100.34 = 717,378.46/x
  3. Step 3: Cross multiply
    1,200,915.97x = 1,657,100.34 × 717,378.46
  4. Step 4: Simplify right side
    1,200,915.97x = 1,188,768,089,974.68
  5. Step 5: Solve for x
    x = 1,188,768,089,974.68/1,200,915.97
  6. Step 6: Final answer
    x = 989,884.49

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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.