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Finding the Fourth Proportional to 722,712.41, 997,301.46 and 400,403.28

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Solution

The fourth proportional to 722,712.41, 997,301.46 and 400,403.28 is: 552,533.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,712.41 : 997,301.46 = 400,403.28 : x
  2. Step 2: Convert to fraction form
    722,712.41/997,301.46 = 400,403.28/x
  3. Step 3: Cross multiply
    722,712.41x = 997,301.46 × 400,403.28
  4. Step 4: Simplify right side
    722,712.41x = 399,322,775,732.79
  5. Step 5: Solve for x
    x = 399,322,775,732.79/722,712.41
  6. Step 6: Final answer
    x = 552,533.44

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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.