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Finding the Fourth Proportional to 677,891.44, 936,728 and 493,809.60

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Solution

The fourth proportional to 677,891.44, 936,728 and 493,809.60 is: 682,358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,891.44 : 936,728 = 493,809.60 : x
  2. Step 2: Convert to fraction form
    677,891.44/936,728 = 493,809.60/x
  3. Step 3: Cross multiply
    677,891.44x = 936,728 × 493,809.60
  4. Step 4: Simplify right side
    677,891.44x = 462,565,278,988.80
  5. Step 5: Solve for x
    x = 462,565,278,988.80/677,891.44
  6. Step 6: Final answer
    x = 682,358.93

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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.