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Finding the Fourth Proportional to 722,658.06, 997,267.41 and 400,388.22

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Solution

The fourth proportional to 722,658.06, 997,267.41 and 400,388.22 is: 552,535.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,658.06 : 997,267.41 = 400,388.22 : x
  2. Step 2: Convert to fraction form
    722,658.06/997,267.41 = 400,388.22/x
  3. Step 3: Cross multiply
    722,658.06x = 997,267.41 × 400,388.22
  4. Step 4: Simplify right side
    722,658.06x = 399,294,123,153.91
  5. Step 5: Solve for x
    x = 399,294,123,153.91/722,658.06
  6. Step 6: Final answer
    x = 552,535.35

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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.