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Finding the Fourth Proportional to 5,338,870.97, 7,367,635.53 and 2,891,480.54

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Solution

The fourth proportional to 5,338,870.97, 7,367,635.53 and 2,891,480.54 is: 3,990,239.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,338,870.97 : 7,367,635.53 = 2,891,480.54 : x
  2. Step 2: Convert to fraction form
    5,338,870.97/7,367,635.53 = 2,891,480.54/x
  3. Step 3: Cross multiply
    5,338,870.97x = 7,367,635.53 × 2,891,480.54
  4. Step 4: Simplify right side
    5,338,870.97x = 21,303,374,723,969.41
  5. Step 5: Solve for x
    x = 21,303,374,723,969.41/5,338,870.97
  6. Step 6: Final answer
    x = 3,990,239.67

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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.