Home / 722,025.78-996,403.41-399,741.18

Finding the Fourth Proportional to 722,025.78, 996,403.41 and 399,741.18

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Solution

The fourth proportional to 722,025.78, 996,403.41 and 399,741.18 is: 551,647.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,025.78 : 996,403.41 = 399,741.18 : x
  2. Step 2: Convert to fraction form
    722,025.78/996,403.41 = 399,741.18/x
  3. Step 3: Cross multiply
    722,025.78x = 996,403.41 × 399,741.18
  4. Step 4: Simplify right side
    722,025.78x = 398,303,474,869.42
  5. Step 5: Solve for x
    x = 398,303,474,869.42/722,025.78
  6. Step 6: Final answer
    x = 551,647.17

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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.