Home / 7,215,300-9,956,714.64-3,995,782.56

Finding the Fourth Proportional to 7,215,300, 9,956,714.64 and 3,995,782.56

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Solution

The fourth proportional to 7,215,300, 9,956,714.64 and 3,995,782.56 is: 5,513,958.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215,300 : 9,956,714.64 = 3,995,782.56 : x
  2. Step 2: Convert to fraction form
    7,215,300/9,956,714.64 = 3,995,782.56/x
  3. Step 3: Cross multiply
    7,215,300x = 9,956,714.64 × 3,995,782.56
  4. Step 4: Simplify right side
    7,215,300x = 39,784,866,713,408.68
  5. Step 5: Solve for x
    x = 39,784,866,713,408.68/7,215,300
  6. Step 6: Final answer
    x = 5,513,958.77

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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.