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Finding the Fourth Proportional to 681,820.66, 940,918.86 and 375,907.89

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Solution

The fourth proportional to 681,820.66, 940,918.86 and 375,907.89 is: 518,756.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,820.66 : 940,918.86 = 375,907.89 : x
  2. Step 2: Convert to fraction form
    681,820.66/940,918.86 = 375,907.89/x
  3. Step 3: Cross multiply
    681,820.66x = 940,918.86 × 375,907.89
  4. Step 4: Simplify right side
    681,820.66x = 353,698,823,323.81
  5. Step 5: Solve for x
    x = 353,698,823,323.81/681,820.66
  6. Step 6: Final answer
    x = 518,756.39

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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.