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Finding the Fourth Proportional to 681,018.54, 939,791.88 and 426,510.06

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Solution

The fourth proportional to 681,018.54, 939,791.88 and 426,510.06 is: 588,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,018.54 : 939,791.88 = 426,510.06 : x
  2. Step 2: Convert to fraction form
    681,018.54/939,791.88 = 426,510.06/x
  3. Step 3: Cross multiply
    681,018.54x = 939,791.88 × 426,510.06
  4. Step 4: Simplify right side
    681,018.54x = 400,830,691,126.31
  5. Step 5: Solve for x
    x = 400,830,691,126.31/681,018.54
  6. Step 6: Final answer
    x = 588,575.30

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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.