Home / 7,182,808.31-9,912,484.81-3,919,833.21

Finding the Fourth Proportional to 7,182,808.31, 9,912,484.81 and 3,919,833.21

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Solution

The fourth proportional to 7,182,808.31, 9,912,484.81 and 3,919,833.21 is: 5,409,484.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,808.31 : 9,912,484.81 = 3,919,833.21 : x
  2. Step 2: Convert to fraction form
    7,182,808.31/9,912,484.81 = 3,919,833.21/x
  3. Step 3: Cross multiply
    7,182,808.31x = 9,912,484.81 × 3,919,833.21
  4. Step 4: Simplify right side
    7,182,808.31x = 38,855,287,193,930.15
  5. Step 5: Solve for x
    x = 38,855,287,193,930.15/7,182,808.31
  6. Step 6: Final answer
    x = 5,409,484.08

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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.