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Finding the Fourth Proportional to 988,378.80, 1,363,840.80 and 701,794.32

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Solution

The fourth proportional to 988,378.80, 1,363,840.80 and 701,794.32 is: 968,389.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,378.80 : 1,363,840.80 = 701,794.32 : x
  2. Step 2: Convert to fraction form
    988,378.80/1,363,840.80 = 701,794.32/x
  3. Step 3: Cross multiply
    988,378.80x = 1,363,840.80 × 701,794.32
  4. Step 4: Simplify right side
    988,378.80x = 957,135,726,824.26
  5. Step 5: Solve for x
    x = 957,135,726,824.26/988,378.80
  6. Step 6: Final answer
    x = 968,389.58

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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.