Home / 3,939,761.90-5,435,945.40-2,390,989.28

Finding the Fourth Proportional to 3,939,761.90, 5,435,945.40 and 2,390,989.28

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Solution

The fourth proportional to 3,939,761.90, 5,435,945.40 and 2,390,989.28 is: 3,299,003.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,761.90 : 5,435,945.40 = 2,390,989.28 : x
  2. Step 2: Convert to fraction form
    3,939,761.90/5,435,945.40 = 2,390,989.28/x
  3. Step 3: Cross multiply
    3,939,761.90x = 5,435,945.40 × 2,390,989.28
  4. Step 4: Simplify right side
    3,939,761.90x = 12,997,287,178,065.31
  5. Step 5: Solve for x
    x = 12,997,287,178,065.31/3,939,761.90
  6. Step 6: Final answer
    x = 3,299,003.22

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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.