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Finding the Fourth Proportional to 664,616.25, 917,049.42 and 374,182.65

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Solution

The fourth proportional to 664,616.25, 917,049.42 and 374,182.65 is: 516,303.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,616.25 : 917,049.42 = 374,182.65 : x
  2. Step 2: Convert to fraction form
    664,616.25/917,049.42 = 374,182.65/x
  3. Step 3: Cross multiply
    664,616.25x = 917,049.42 × 374,182.65
  4. Step 4: Simplify right side
    664,616.25x = 343,143,982,156.56
  5. Step 5: Solve for x
    x = 343,143,982,156.56/664,616.25
  6. Step 6: Final answer
    x = 516,303.93

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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.