Home / 1,986,971.85-2,742,448.46-1,212,436.76

Finding the Fourth Proportional to 1,986,971.85, 2,742,448.46 and 1,212,436.76

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Solution

The fourth proportional to 1,986,971.85, 2,742,448.46 and 1,212,436.76 is: 1,673,423.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,971.85 : 2,742,448.46 = 1,212,436.76 : x
  2. Step 2: Convert to fraction form
    1,986,971.85/2,742,448.46 = 1,212,436.76/x
  3. Step 3: Cross multiply
    1,986,971.85x = 2,742,448.46 × 1,212,436.76
  4. Step 4: Simplify right side
    1,986,971.85x = 3,325,045,305,534.96
  5. Step 5: Solve for x
    x = 3,325,045,305,534.96/1,986,971.85
  6. Step 6: Final answer
    x = 1,673,423.46

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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.