Home / 812,683.26-1,219,105.08-280,134.18

Finding the Fourth Proportional to 812,683.26, 1,219,105.08 and 280,134.18

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Solution

The fourth proportional to 812,683.26, 1,219,105.08 and 280,134.18 is: 420,228.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,683.26 : 1,219,105.08 = 280,134.18 : x
  2. Step 2: Convert to fraction form
    812,683.26/1,219,105.08 = 280,134.18/x
  3. Step 3: Cross multiply
    812,683.26x = 1,219,105.08 × 280,134.18
  4. Step 4: Simplify right side
    812,683.26x = 341,513,001,919.63
  5. Step 5: Solve for x
    x = 341,513,001,919.63/812,683.26
  6. Step 6: Final answer
    x = 420,228.91

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Double scale
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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.