Home / 8,691,388.60-13,031,898.90-5,328,009.40

Finding the Fourth Proportional to 8,691,388.60, 13,031,898.90 and 5,328,009.40

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Solution

The fourth proportional to 8,691,388.60, 13,031,898.90 and 5,328,009.40 is: 7,988,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691,388.60 : 13,031,898.90 = 5,328,009.40 : x
  2. Step 2: Convert to fraction form
    8,691,388.60/13,031,898.90 = 5,328,009.40/x
  3. Step 3: Cross multiply
    8,691,388.60x = 13,031,898.90 × 5,328,009.40
  4. Step 4: Simplify right side
    8,691,388.60x = 69,434,079,839,049.66
  5. Step 5: Solve for x
    x = 69,434,079,839,049.66/8,691,388.60
  6. Step 6: Final answer
    x = 7,988,836.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.