Home / 2,078,505.20-3,117,109.80-816,719.60

Finding the Fourth Proportional to 2,078,505.20, 3,117,109.80 and 816,719.60

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Solution

The fourth proportional to 2,078,505.20, 3,117,109.80 and 816,719.60 is: 1,224,824.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078,505.20 : 3,117,109.80 = 816,719.60 : x
  2. Step 2: Convert to fraction form
    2,078,505.20/3,117,109.80 = 816,719.60/x
  3. Step 3: Cross multiply
    2,078,505.20x = 3,117,109.80 × 816,719.60
  4. Step 4: Simplify right side
    2,078,505.20x = 2,545,804,669,012.08
  5. Step 5: Solve for x
    x = 2,545,804,669,012.08/2,078,505.20
  6. Step 6: Final answer
    x = 1,224,824.78

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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.