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Finding the Fourth Proportional to 679,067.40, 936,470.64 and 446,083

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Solution

The fourth proportional to 679,067.40, 936,470.64 and 446,083 is: 615,172.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,067.40 : 936,470.64 = 446,083 : x
  2. Step 2: Convert to fraction form
    679,067.40/936,470.64 = 446,083/x
  3. Step 3: Cross multiply
    679,067.40x = 936,470.64 × 446,083
  4. Step 4: Simplify right side
    679,067.40x = 417,743,632,503.12
  5. Step 5: Solve for x
    x = 417,743,632,503.12/679,067.40
  6. Step 6: Final answer
    x = 615,172.56

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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.