Home / 2,978,901.39-4,110,761.12-1,620,779.79

Finding the Fourth Proportional to 2,978,901.39, 4,110,761.12 and 1,620,779.79

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Solution

The fourth proportional to 2,978,901.39, 4,110,761.12 and 1,620,779.79 is: 2,236,609.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978,901.39 : 4,110,761.12 = 1,620,779.79 : x
  2. Step 2: Convert to fraction form
    2,978,901.39/4,110,761.12 = 1,620,779.79/x
  3. Step 3: Cross multiply
    2,978,901.39x = 4,110,761.12 × 1,620,779.79
  4. Step 4: Simplify right side
    2,978,901.39x = 6,662,638,536,709.87
  5. Step 5: Solve for x
    x = 6,662,638,536,709.87/2,978,901.39
  6. Step 6: Final answer
    x = 2,236,609.29

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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.