Home / 8,718,679.76-12,031,766.80-5,409,743.29

Finding the Fourth Proportional to 8,718,679.76, 12,031,766.80 and 5,409,743.29

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Solution

The fourth proportional to 8,718,679.76, 12,031,766.80 and 5,409,743.29 is: 7,465,438.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718,679.76 : 12,031,766.80 = 5,409,743.29 : x
  2. Step 2: Convert to fraction form
    8,718,679.76/12,031,766.80 = 5,409,743.29/x
  3. Step 3: Cross multiply
    8,718,679.76x = 12,031,766.80 × 5,409,743.29
  4. Step 4: Simplify right side
    8,718,679.76x = 65,088,769,669,540.99
  5. Step 5: Solve for x
    x = 65,088,769,669,540.99/8,718,679.76
  6. Step 6: Final answer
    x = 7,465,438.75

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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.