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Finding the Fourth Proportional to 723,371.58, 998,309.21 and 401,144.47

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Solution

The fourth proportional to 723,371.58, 998,309.21 and 401,144.47 is: 553,610.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,371.58 : 998,309.21 = 401,144.47 : x
  2. Step 2: Convert to fraction form
    723,371.58/998,309.21 = 401,144.47/x
  3. Step 3: Cross multiply
    723,371.58x = 998,309.21 × 401,144.47
  4. Step 4: Simplify right side
    723,371.58x = 400,466,214,440.07
  5. Step 5: Solve for x
    x = 400,466,214,440.07/723,371.58
  6. Step 6: Final answer
    x = 553,610.66

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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.