Home / 1,187,064.44-1,638,179.43-728,432.43

Finding the Fourth Proportional to 1,187,064.44, 1,638,179.43 and 728,432.43

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Solution

The fourth proportional to 1,187,064.44, 1,638,179.43 and 728,432.43 is: 1,005,255.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,064.44 : 1,638,179.43 = 728,432.43 : x
  2. Step 2: Convert to fraction form
    1,187,064.44/1,638,179.43 = 728,432.43/x
  3. Step 3: Cross multiply
    1,187,064.44x = 1,638,179.43 × 728,432.43
  4. Step 4: Simplify right side
    1,187,064.44x = 1,193,303,022,970.92
  5. Step 5: Solve for x
    x = 1,193,303,022,970.92/1,187,064.44
  6. Step 6: Final answer
    x = 1,005,255.48

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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.