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Finding the Fourth Proportional to 722,546.58, 997,101.22 and 400,255.68

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Solution

The fourth proportional to 722,546.58, 997,101.22 and 400,255.68 is: 552,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,546.58 : 997,101.22 = 400,255.68 : x
  2. Step 2: Convert to fraction form
    722,546.58/997,101.22 = 400,255.68/x
  3. Step 3: Cross multiply
    722,546.58x = 997,101.22 × 400,255.68
  4. Step 4: Simplify right side
    722,546.58x = 399,095,426,839.93
  5. Step 5: Solve for x
    x = 399,095,426,839.93/722,546.58
  6. Step 6: Final answer
    x = 552,345.60

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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.