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Finding the Fourth Proportional to 722,727.74, 997,351.08 and 400,436.66

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Solution

The fourth proportional to 722,727.74, 997,351.08 and 400,436.66 is: 552,595.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,727.74 : 997,351.08 = 400,436.66 : x
  2. Step 2: Convert to fraction form
    722,727.74/997,351.08 = 400,436.66/x
  3. Step 3: Cross multiply
    722,727.74x = 997,351.08 × 400,436.66
  4. Step 4: Simplify right side
    722,727.74x = 399,375,935,322.59
  5. Step 5: Solve for x
    x = 399,375,935,322.59/722,727.74
  6. Step 6: Final answer
    x = 552,595.28

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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.