Home / 721,835.82-996,108.03-399,546.54

Finding the Fourth Proportional to 721,835.82, 996,108.03 and 399,546.54

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Solution

The fourth proportional to 721,835.82, 996,108.03 and 399,546.54 is: 551,360.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,835.82 : 996,108.03 = 399,546.54 : x
  2. Step 2: Convert to fraction form
    721,835.82/996,108.03 = 399,546.54/x
  3. Step 3: Cross multiply
    721,835.82x = 996,108.03 × 399,546.54
  4. Step 4: Simplify right side
    721,835.82x = 397,991,516,852.72
  5. Step 5: Solve for x
    x = 397,991,516,852.72/721,835.82
  6. Step 6: Final answer
    x = 551,360.17

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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.