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Finding the Fourth Proportional to 606,908.40, 911,399.40 and 397,474.80

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Solution

The fourth proportional to 606,908.40, 911,399.40 and 397,474.80 is: 596,891.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,908.40 : 911,399.40 = 397,474.80 : x
  2. Step 2: Convert to fraction form
    606,908.40/911,399.40 = 397,474.80/x
  3. Step 3: Cross multiply
    606,908.40x = 911,399.40 × 397,474.80
  4. Step 4: Simplify right side
    606,908.40x = 362,258,294,235.12
  5. Step 5: Solve for x
    x = 362,258,294,235.12/606,908.40
  6. Step 6: Final answer
    x = 596,891.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.