Home / 1,319,489.70-1,979,234.55-787,611.30

Finding the Fourth Proportional to 1,319,489.70, 1,979,234.55 and 787,611.30

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Solution

The fourth proportional to 1,319,489.70, 1,979,234.55 and 787,611.30 is: 1,181,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,489.70 : 1,979,234.55 = 787,611.30 : x
  2. Step 2: Convert to fraction form
    1,319,489.70/1,979,234.55 = 787,611.30/x
  3. Step 3: Cross multiply
    1,319,489.70x = 1,979,234.55 × 787,611.30
  4. Step 4: Simplify right side
    1,319,489.70x = 1,558,867,496,930.42
  5. Step 5: Solve for x
    x = 1,558,867,496,930.42/1,319,489.70
  6. Step 6: Final answer
    x = 1,181,416.95

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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.