Home / 1,188,212.64-1,639,733.88-644,348.28

Finding the Fourth Proportional to 1,188,212.64, 1,639,733.88 and 644,348.28

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Solution

The fourth proportional to 1,188,212.64, 1,639,733.88 and 644,348.28 is: 889,200.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,212.64 : 1,639,733.88 = 644,348.28 : x
  2. Step 2: Convert to fraction form
    1,188,212.64/1,639,733.88 = 644,348.28/x
  3. Step 3: Cross multiply
    1,188,212.64x = 1,639,733.88 × 644,348.28
  4. Step 4: Simplify right side
    1,188,212.64x = 1,056,559,705,235.73
  5. Step 5: Solve for x
    x = 1,056,559,705,235.73/1,188,212.64
  6. Step 6: Final answer
    x = 889,200.86

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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.