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Finding the Fourth Proportional to 2,981,502.80, 4,472,254.20 and 2,658,021.20

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Solution

The fourth proportional to 2,981,502.80, 4,472,254.20 and 2,658,021.20 is: 3,987,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981,502.80 : 4,472,254.20 = 2,658,021.20 : x
  2. Step 2: Convert to fraction form
    2,981,502.80/4,472,254.20 = 2,658,021.20/x
  3. Step 3: Cross multiply
    2,981,502.80x = 4,472,254.20 × 2,658,021.20
  4. Step 4: Simplify right side
    2,981,502.80x = 11,887,346,475,389.04
  5. Step 5: Solve for x
    x = 11,887,346,475,389.04/2,981,502.80
  6. Step 6: Final answer
    x = 3,987,031.80

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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.