Home / 3,980,511.72-5,488,765.20-2,689,109.82

Finding the Fourth Proportional to 3,980,511.72, 5,488,765.20 and 2,689,109.82

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Solution

The fourth proportional to 3,980,511.72, 5,488,765.20 and 2,689,109.82 is: 3,708,038.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980,511.72 : 5,488,765.20 = 2,689,109.82 : x
  2. Step 2: Convert to fraction form
    3,980,511.72/5,488,765.20 = 2,689,109.82/x
  3. Step 3: Cross multiply
    3,980,511.72x = 5,488,765.20 × 2,689,109.82
  4. Step 4: Simplify right side
    3,980,511.72x = 14,759,892,398,994.26
  5. Step 5: Solve for x
    x = 14,759,892,398,994.26/3,980,511.72
  6. Step 6: Final answer
    x = 3,708,038.92

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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.