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Finding the Fourth Proportional to 424,458.39, 635,940.21 and 399,173.42

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Solution

The fourth proportional to 424,458.39, 635,940.21 and 399,173.42 is: 598,057.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,458.39 : 635,940.21 = 399,173.42 : x
  2. Step 2: Convert to fraction form
    424,458.39/635,940.21 = 399,173.42/x
  3. Step 3: Cross multiply
    424,458.39x = 635,940.21 × 399,173.42
  4. Step 4: Simplify right side
    424,458.39x = 253,850,428,541.22
  5. Step 5: Solve for x
    x = 253,850,428,541.22/424,458.39
  6. Step 6: Final answer
    x = 598,057.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.