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Finding the Fourth Proportional to 722,103.75, 996,534.30 and 399,813.84

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Solution

The fourth proportional to 722,103.75, 996,534.30 and 399,813.84 is: 551,760.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,103.75 : 996,534.30 = 399,813.84 : x
  2. Step 2: Convert to fraction form
    722,103.75/996,534.30 = 399,813.84/x
  3. Step 3: Cross multiply
    722,103.75x = 996,534.30 × 399,813.84
  4. Step 4: Simplify right side
    722,103.75x = 398,428,205,174.71
  5. Step 5: Solve for x
    x = 398,428,205,174.71/722,103.75
  6. Step 6: Final answer
    x = 551,760.33

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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.