Home / 809,012.07-1,213,508.39-209,919.87

Finding the Fourth Proportional to 809,012.07, 1,213,508.39 and 209,919.87

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Solution

The fourth proportional to 809,012.07, 1,213,508.39 and 209,919.87 is: 314,877.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,012.07 : 1,213,508.39 = 209,919.87 : x
  2. Step 2: Convert to fraction form
    809,012.07/1,213,508.39 = 209,919.87/x
  3. Step 3: Cross multiply
    809,012.07x = 1,213,508.39 × 209,919.87
  4. Step 4: Simplify right side
    809,012.07x = 254,739,522,423.11
  5. Step 5: Solve for x
    x = 254,739,522,423.11/809,012.07
  6. Step 6: Final answer
    x = 314,877.28

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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.