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Finding the Fourth Proportional to 719,462.48, 992,832.17 and 397,165.64

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Solution

The fourth proportional to 719,462.48, 992,832.17 and 397,165.64 is: 548,074.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,462.48 : 992,832.17 = 397,165.64 : x
  2. Step 2: Convert to fraction form
    719,462.48/992,832.17 = 397,165.64/x
  3. Step 3: Cross multiply
    719,462.48x = 992,832.17 × 397,165.64
  4. Step 4: Simplify right side
    719,462.48x = 394,318,817,260.65
  5. Step 5: Solve for x
    x = 394,318,817,260.65/719,462.48
  6. Step 6: Final answer
    x = 548,074.20

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1.5x scale

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.