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Finding the Fourth Proportional to 424,651.36, 633,575 and 338,862.64

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Solution

The fourth proportional to 424,651.36, 633,575 and 338,862.64 is: 505,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,651.36 : 633,575 = 338,862.64 : x
  2. Step 2: Convert to fraction form
    424,651.36/633,575 = 338,862.64/x
  3. Step 3: Cross multiply
    424,651.36x = 633,575 × 338,862.64
  4. Step 4: Simplify right side
    424,651.36x = 214,694,897,138
  5. Step 5: Solve for x
    x = 214,694,897,138/424,651.36
  6. Step 6: Final answer
    x = 505,579.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.