Home / 7,182,766.71-9,912,428.91-3,919,792.05

Finding the Fourth Proportional to 7,182,766.71, 9,912,428.91 and 3,919,792.05

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Solution

The fourth proportional to 7,182,766.71, 9,912,428.91 and 3,919,792.05 is: 5,409,428.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,766.71 : 9,912,428.91 = 3,919,792.05 : x
  2. Step 2: Convert to fraction form
    7,182,766.71/9,912,428.91 = 3,919,792.05/x
  3. Step 3: Cross multiply
    7,182,766.71x = 9,912,428.91 × 3,919,792.05
  4. Step 4: Simplify right side
    7,182,766.71x = 38,854,660,037,608.16
  5. Step 5: Solve for x
    x = 38,854,660,037,608.16/7,182,766.71
  6. Step 6: Final answer
    x = 5,409,428.09

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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.