Home / 1,287,069.96-1,930,656.78-612,804.36

Finding the Fourth Proportional to 1,287,069.96, 1,930,656.78 and 612,804.36

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Solution

The fourth proportional to 1,287,069.96, 1,930,656.78 and 612,804.36 is: 919,231.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,069.96 : 1,930,656.78 = 612,804.36 : x
  2. Step 2: Convert to fraction form
    1,287,069.96/1,930,656.78 = 612,804.36/x
  3. Step 3: Cross multiply
    1,287,069.96x = 1,930,656.78 × 612,804.36
  4. Step 4: Simplify right side
    1,287,069.96x = 1,183,114,892,447.56
  5. Step 5: Solve for x
    x = 1,183,114,892,447.56/1,287,069.96
  6. Step 6: Final answer
    x = 919,231.22

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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.