Home / 716,467.30-988,724.83-394,170.47

Finding the Fourth Proportional to 716,467.30, 988,724.83 and 394,170.47

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Solution

The fourth proportional to 716,467.30, 988,724.83 and 394,170.47 is: 543,955.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,467.30 : 988,724.83 = 394,170.47 : x
  2. Step 2: Convert to fraction form
    716,467.30/988,724.83 = 394,170.47/x
  3. Step 3: Cross multiply
    716,467.30x = 988,724.83 × 394,170.47
  4. Step 4: Simplify right side
    716,467.30x = 389,726,133,413.58
  5. Step 5: Solve for x
    x = 389,726,133,413.58/716,467.30
  6. Step 6: Final answer
    x = 543,955.23

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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.