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Finding the Fourth Proportional to 2,648,457.72, 3,972,723.21 and 755,198.91

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Solution

The fourth proportional to 2,648,457.72, 3,972,723.21 and 755,198.91 is: 1,132,808.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648,457.72 : 3,972,723.21 = 755,198.91 : x
  2. Step 2: Convert to fraction form
    2,648,457.72/3,972,723.21 = 755,198.91/x
  3. Step 3: Cross multiply
    2,648,457.72x = 3,972,723.21 × 755,198.91
  4. Step 4: Simplify right side
    2,648,457.72x = 3,000,196,237,923.70
  5. Step 5: Solve for x
    x = 3,000,196,237,923.70/2,648,457.72
  6. Step 6: Final answer
    x = 1,132,808.81

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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.