Home / 669,979.86-1,005,125.25-220,684.62

Finding the Fourth Proportional to 669,979.86, 1,005,125.25 and 220,684.62

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Solution

The fourth proportional to 669,979.86, 1,005,125.25 and 220,684.62 is: 331,078.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,979.86 : 1,005,125.25 = 220,684.62 : x
  2. Step 2: Convert to fraction form
    669,979.86/1,005,125.25 = 220,684.62/x
  3. Step 3: Cross multiply
    669,979.86x = 1,005,125.25 × 220,684.62
  4. Step 4: Simplify right side
    669,979.86x = 221,815,683,848.66
  5. Step 5: Solve for x
    x = 221,815,683,848.66/669,979.86
  6. Step 6: Final answer
    x = 331,078.14

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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.