Home / 7,182,689.80-9,912,322.25-3,919,714.78

Finding the Fourth Proportional to 7,182,689.80, 9,912,322.25 and 3,919,714.78

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Solution

The fourth proportional to 7,182,689.80, 9,912,322.25 and 3,919,714.78 is: 5,409,321.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,689.80 : 9,912,322.25 = 3,919,714.78 : x
  2. Step 2: Convert to fraction form
    7,182,689.80/9,912,322.25 = 3,919,714.78/x
  3. Step 3: Cross multiply
    7,182,689.80x = 9,912,322.25 × 3,919,714.78
  4. Step 4: Simplify right side
    7,182,689.80x = 38,853,476,027,447.85
  5. Step 5: Solve for x
    x = 38,853,476,027,447.85/7,182,689.80
  6. Step 6: Final answer
    x = 5,409,321.17

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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.