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Finding the Fourth Proportional to 681,759.05, 940,830.33 and 375,828.71

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Solution

The fourth proportional to 681,759.05, 940,830.33 and 375,828.71 is: 518,645.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,759.05 : 940,830.33 = 375,828.71 : x
  2. Step 2: Convert to fraction form
    681,759.05/940,830.33 = 375,828.71/x
  3. Step 3: Cross multiply
    681,759.05x = 940,830.33 × 375,828.71
  4. Step 4: Simplify right side
    681,759.05x = 353,591,051,250.15
  5. Step 5: Solve for x
    x = 353,591,051,250.15/681,759.05
  6. Step 6: Final answer
    x = 518,645.19

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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.