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Finding the Fourth Proportional to 681,028.74, 939,826 and 375,115.98

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Solution

The fourth proportional to 681,028.74, 939,826 and 375,115.98 is: 517,663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,028.74 : 939,826 = 375,115.98 : x
  2. Step 2: Convert to fraction form
    681,028.74/939,826 = 375,115.98/x
  3. Step 3: Cross multiply
    681,028.74x = 939,826 × 375,115.98
  4. Step 4: Simplify right side
    681,028.74x = 352,543,751,019.48
  5. Step 5: Solve for x
    x = 352,543,751,019.48/681,028.74
  6. Step 6: Final answer
    x = 517,663.54

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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.