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Finding the Fourth Proportional to 623,940.72, 936,009 and 269,055.60

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Solution

The fourth proportional to 623,940.72, 936,009 and 269,055.60 is: 403,625.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,940.72 : 936,009 = 269,055.60 : x
  2. Step 2: Convert to fraction form
    623,940.72/936,009 = 269,055.60/x
  3. Step 3: Cross multiply
    623,940.72x = 936,009 × 269,055.60
  4. Step 4: Simplify right side
    623,940.72x = 251,838,463,100.40
  5. Step 5: Solve for x
    x = 251,838,463,100.40/623,940.72
  6. Step 6: Final answer
    x = 403,625.63

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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.