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Finding the Fourth Proportional to 8,590,661.20, 12,885,700.20 and 2,200,976.20

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Solution

The fourth proportional to 8,590,661.20, 12,885,700.20 and 2,200,976.20 is: 3,301,389.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590,661.20 : 12,885,700.20 = 2,200,976.20 : x
  2. Step 2: Convert to fraction form
    8,590,661.20/12,885,700.20 = 2,200,976.20/x
  3. Step 3: Cross multiply
    8,590,661.20x = 12,885,700.20 × 2,200,976.20
  4. Step 4: Simplify right side
    8,590,661.20x = 28,361,119,460,535.24
  5. Step 5: Solve for x
    x = 28,361,119,460,535.24/8,590,661.20
  6. Step 6: Final answer
    x = 3,301,389.59

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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.