Home / 8,512,389.60-12,768,584.40-5,321,119.20

Finding the Fourth Proportional to 8,512,389.60, 12,768,584.40 and 5,321,119.20

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Solution

The fourth proportional to 8,512,389.60, 12,768,584.40 and 5,321,119.20 is: 7,981,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512,389.60 : 12,768,584.40 = 5,321,119.20 : x
  2. Step 2: Convert to fraction form
    8,512,389.60/12,768,584.40 = 5,321,119.20/x
  3. Step 3: Cross multiply
    8,512,389.60x = 12,768,584.40 × 5,321,119.20
  4. Step 4: Simplify right side
    8,512,389.60x = 67,943,159,607,660.48
  5. Step 5: Solve for x
    x = 67,943,159,607,660.48/8,512,389.60
  6. Step 6: Final answer
    x = 7,981,678.80

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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.