Home / 1,188,240.71-1,639,772.60-644,376.33

Finding the Fourth Proportional to 1,188,240.71, 1,639,772.60 and 644,376.33

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Solution

The fourth proportional to 1,188,240.71, 1,639,772.60 and 644,376.33 is: 889,239.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,240.71 : 1,639,772.60 = 644,376.33 : x
  2. Step 2: Convert to fraction form
    1,188,240.71/1,639,772.60 = 644,376.33/x
  3. Step 3: Cross multiply
    1,188,240.71x = 1,639,772.60 × 644,376.33
  4. Step 4: Simplify right side
    1,188,240.71x = 1,056,630,646,800.68
  5. Step 5: Solve for x
    x = 1,056,630,646,800.68/1,188,240.71
  6. Step 6: Final answer
    x = 889,239.56

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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.