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Finding the Fourth Proportional to 624,364.86, 861,531.14 and 366,144.40

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Solution

The fourth proportional to 624,364.86, 861,531.14 and 366,144.40 is: 505,225.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,364.86 : 861,531.14 = 366,144.40 : x
  2. Step 2: Convert to fraction form
    624,364.86/861,531.14 = 366,144.40/x
  3. Step 3: Cross multiply
    624,364.86x = 861,531.14 × 366,144.40
  4. Step 4: Simplify right side
    624,364.86x = 315,444,802,269.33
  5. Step 5: Solve for x
    x = 315,444,802,269.33/624,364.86
  6. Step 6: Final answer
    x = 505,225.11

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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.