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Finding the Fourth Proportional to 518,449.69, 777,674.54 and 163,499.59

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Solution

The fourth proportional to 518,449.69, 777,674.54 and 163,499.59 is: 245,249.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,449.69 : 777,674.54 = 163,499.59 : x
  2. Step 2: Convert to fraction form
    518,449.69/777,674.54 = 163,499.59/x
  3. Step 3: Cross multiply
    518,449.69x = 777,674.54 × 163,499.59
  4. Step 4: Simplify right side
    518,449.69x = 127,149,468,443.44
  5. Step 5: Solve for x
    x = 127,149,468,443.44/518,449.69
  6. Step 6: Final answer
    x = 245,249.39

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Double scale
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Similar ratio
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1.5x scale

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.