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Finding the Fourth Proportional to 722,474.76, 997,015.26 and 400,205.73

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Solution

The fourth proportional to 722,474.76, 997,015.26 and 400,205.73 is: 552,283.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,474.76 : 997,015.26 = 400,205.73 : x
  2. Step 2: Convert to fraction form
    722,474.76/997,015.26 = 400,205.73/x
  3. Step 3: Cross multiply
    722,474.76x = 997,015.26 × 400,205.73
  4. Step 4: Simplify right side
    722,474.76x = 399,011,219,949.44
  5. Step 5: Solve for x
    x = 399,011,219,949.44/722,474.76
  6. Step 6: Final answer
    x = 552,283.96

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Double scale
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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.