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Finding the Fourth Proportional to 722,073.11, 996,476.35 and 395,400.01

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Solution

The fourth proportional to 722,073.11, 996,476.35 and 395,400.01 is: 545,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,073.11 : 996,476.35 = 395,400.01 : x
  2. Step 2: Convert to fraction form
    722,073.11/996,476.35 = 395,400.01/x
  3. Step 3: Cross multiply
    722,073.11x = 996,476.35 × 395,400.01
  4. Step 4: Simplify right side
    722,073.11x = 394,006,758,754.76
  5. Step 5: Solve for x
    x = 394,006,758,754.76/722,073.11
  6. Step 6: Final answer
    x = 545,660.48

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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.