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Finding the Fourth Proportional to 722,519.62, 997,064.60 and 400,222.96

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Solution

The fourth proportional to 722,519.62, 997,064.60 and 400,222.96 is: 552,300.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,519.62 : 997,064.60 = 400,222.96 : x
  2. Step 2: Convert to fraction form
    722,519.62/997,064.60 = 400,222.96/x
  3. Step 3: Cross multiply
    722,519.62x = 997,064.60 × 400,222.96
  4. Step 4: Simplify right side
    722,519.62x = 399,048,141,029.44
  5. Step 5: Solve for x
    x = 399,048,141,029.44/722,519.62
  6. Step 6: Final answer
    x = 552,300.77

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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.