Home / 722,105.22-996,536.34-399,815.28

Finding the Fourth Proportional to 722,105.22, 996,536.34 and 399,815.28

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Solution

The fourth proportional to 722,105.22, 996,536.34 and 399,815.28 is: 551,762.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,105.22 : 996,536.34 = 399,815.28 : x
  2. Step 2: Convert to fraction form
    722,105.22/996,536.34 = 399,815.28/x
  3. Step 3: Cross multiply
    722,105.22x = 996,536.34 × 399,815.28
  4. Step 4: Simplify right side
    722,105.22x = 398,430,455,807.28
  5. Step 5: Solve for x
    x = 398,430,455,807.28/722,105.22
  6. Step 6: Final answer
    x = 551,762.33

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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.