Home / 643,628.44-888,379.59-401,765.41

Finding the Fourth Proportional to 643,628.44, 888,379.59 and 401,765.41

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Solution

The fourth proportional to 643,628.44, 888,379.59 and 401,765.41 is: 554,543.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,628.44 : 888,379.59 = 401,765.41 : x
  2. Step 2: Convert to fraction form
    643,628.44/888,379.59 = 401,765.41/x
  3. Step 3: Cross multiply
    643,628.44x = 888,379.59 × 401,765.41
  4. Step 4: Simplify right side
    643,628.44x = 356,920,190,211.98
  5. Step 5: Solve for x
    x = 356,920,190,211.98/643,628.44
  6. Step 6: Final answer
    x = 554,543.85

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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.