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Finding the Fourth Proportional to 722,092.51, 996,503.20 and 395,419.31

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Solution

The fourth proportional to 722,092.51, 996,503.20 and 395,419.31 is: 545,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,092.51 : 996,503.20 = 395,419.31 : x
  2. Step 2: Convert to fraction form
    722,092.51/996,503.20 = 395,419.31/x
  3. Step 3: Cross multiply
    722,092.51x = 996,503.20 × 395,419.31
  4. Step 4: Simplify right side
    722,092.51x = 394,036,601,785.73
  5. Step 5: Solve for x
    x = 394,036,601,785.73/722,092.51
  6. Step 6: Final answer
    x = 545,687.15

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1.5x scale

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.