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Finding the Fourth Proportional to 719,466.20, 992,871.40 and 397,176.46

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Solution

The fourth proportional to 719,466.20, 992,871.40 and 397,176.46 is: 548,107.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,466.20 : 992,871.40 = 397,176.46 : x
  2. Step 2: Convert to fraction form
    719,466.20/992,871.40 = 397,176.46/x
  3. Step 3: Cross multiply
    719,466.20x = 992,871.40 × 397,176.46
  4. Step 4: Simplify right side
    719,466.20x = 394,345,147,887.24
  5. Step 5: Solve for x
    x = 394,345,147,887.24/719,466.20
  6. Step 6: Final answer
    x = 548,107.96

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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.