Home / 7,182,687.30-9,912,318.80-3,919,712.28

Finding the Fourth Proportional to 7,182,687.30, 9,912,318.80 and 3,919,712.28

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Solution

The fourth proportional to 7,182,687.30, 9,912,318.80 and 3,919,712.28 is: 5,409,317.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,687.30 : 9,912,318.80 = 3,919,712.28 : x
  2. Step 2: Convert to fraction form
    7,182,687.30/9,912,318.80 = 3,919,712.28/x
  3. Step 3: Cross multiply
    7,182,687.30x = 9,912,318.80 × 3,919,712.28
  4. Step 4: Simplify right side
    7,182,687.30x = 38,853,437,704,036.30
  5. Step 5: Solve for x
    x = 38,853,437,704,036.30/7,182,687.30
  6. Step 6: Final answer
    x = 5,409,317.72

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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.