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Finding the Fourth Proportional to 722,569.36, 997,131 and 400,274.32

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Solution

The fourth proportional to 722,569.36, 997,131 and 400,274.32 is: 552,370.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,569.36 : 997,131 = 400,274.32 : x
  2. Step 2: Convert to fraction form
    722,569.36/997,131 = 400,274.32/x
  3. Step 3: Cross multiply
    722,569.36x = 997,131 × 400,274.32
  4. Step 4: Simplify right side
    722,569.36x = 399,125,932,975.92
  5. Step 5: Solve for x
    x = 399,125,932,975.92/722,569.36
  6. Step 6: Final answer
    x = 552,370.41

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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.