Home / 1,009,136.80-1,515,811.20-851,672.80

Finding the Fourth Proportional to 1,009,136.80, 1,515,811.20 and 851,672.80

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Solution

The fourth proportional to 1,009,136.80, 1,515,811.20 and 851,672.80 is: 1,279,286.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009,136.80 : 1,515,811.20 = 851,672.80 : x
  2. Step 2: Convert to fraction form
    1,009,136.80/1,515,811.20 = 851,672.80/x
  3. Step 3: Cross multiply
    1,009,136.80x = 1,515,811.20 × 851,672.80
  4. Step 4: Simplify right side
    1,009,136.80x = 1,290,975,168,975.36
  5. Step 5: Solve for x
    x = 1,290,975,168,975.36/1,009,136.80
  6. Step 6: Final answer
    x = 1,279,286.58

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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.