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Finding the Fourth Proportional to 715,392.48, 987,183.84 and 413,605.92

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Solution

The fourth proportional to 715,392.48, 987,183.84 and 413,605.92 is: 570,742.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,392.48 : 987,183.84 = 413,605.92 : x
  2. Step 2: Convert to fraction form
    715,392.48/987,183.84 = 413,605.92/x
  3. Step 3: Cross multiply
    715,392.48x = 987,183.84 × 413,605.92
  4. Step 4: Simplify right side
    715,392.48x = 408,305,080,352.33
  5. Step 5: Solve for x
    x = 408,305,080,352.33/715,392.48
  6. Step 6: Final answer
    x = 570,742.76

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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.