Home / 813,127.32-1,219,854.60-280,668.96

Finding the Fourth Proportional to 813,127.32, 1,219,854.60 and 280,668.96

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Solution

The fourth proportional to 813,127.32, 1,219,854.60 and 280,668.96 is: 421,059.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,127.32 : 1,219,854.60 = 280,668.96 : x
  2. Step 2: Convert to fraction form
    813,127.32/1,219,854.60 = 280,668.96/x
  3. Step 3: Cross multiply
    813,127.32x = 1,219,854.60 × 280,668.96
  4. Step 4: Simplify right side
    813,127.32x = 342,375,321,933.22
  5. Step 5: Solve for x
    x = 342,375,321,933.22/813,127.32
  6. Step 6: Final answer
    x = 421,059.92

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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.