Home / 5,138,248.22-7,090,782.28-2,815,228.78

Finding the Fourth Proportional to 5,138,248.22, 7,090,782.28 and 2,815,228.78

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Solution

The fourth proportional to 5,138,248.22, 7,090,782.28 and 2,815,228.78 is: 3,885,015.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138,248.22 : 7,090,782.28 = 2,815,228.78 : x
  2. Step 2: Convert to fraction form
    5,138,248.22/7,090,782.28 = 2,815,228.78/x
  3. Step 3: Cross multiply
    5,138,248.22x = 7,090,782.28 × 2,815,228.78
  4. Step 4: Simplify right side
    5,138,248.22x = 19,962,174,347,370.02
  5. Step 5: Solve for x
    x = 19,962,174,347,370.02/5,138,248.22
  6. Step 6: Final answer
    x = 3,885,015.57

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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.