Home / 1,991,329-2,748,241.40-1,227,362.92

Finding the Fourth Proportional to 1,991,329, 2,748,241.40 and 1,227,362.92

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Solution

The fourth proportional to 1,991,329, 2,748,241.40 and 1,227,362.92 is: 1,693,888.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,329 : 2,748,241.40 = 1,227,362.92 : x
  2. Step 2: Convert to fraction form
    1,991,329/2,748,241.40 = 1,227,362.92/x
  3. Step 3: Cross multiply
    1,991,329x = 2,748,241.40 × 1,227,362.92
  4. Step 4: Simplify right side
    1,991,329x = 3,373,089,589,568.89
  5. Step 5: Solve for x
    x = 3,373,089,589,568.89/1,991,329
  6. Step 6: Final answer
    x = 1,693,888.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.