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Finding the Fourth Proportional to 723,902.78, 999,105.75 and 401,716.37

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Solution

The fourth proportional to 723,902.78, 999,105.75 and 401,716.37 is: 554,435.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,902.78 : 999,105.75 = 401,716.37 : x
  2. Step 2: Convert to fraction form
    723,902.78/999,105.75 = 401,716.37/x
  3. Step 3: Cross multiply
    723,902.78x = 999,105.75 × 401,716.37
  4. Step 4: Simplify right side
    723,902.78x = 401,357,130,140.60
  5. Step 5: Solve for x
    x = 401,357,130,140.60/723,902.78
  6. Step 6: Final answer
    x = 554,435.13

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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.