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Finding the Fourth Proportional to 636,831.43, 955,690.02 and 411,633.31

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Solution

The fourth proportional to 636,831.43, 955,690.02 and 411,633.31 is: 617,736.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,831.43 : 955,690.02 = 411,633.31 : x
  2. Step 2: Convert to fraction form
    636,831.43/955,690.02 = 411,633.31/x
  3. Step 3: Cross multiply
    636,831.43x = 955,690.02 × 411,633.31
  4. Step 4: Simplify right side
    636,831.43x = 393,393,846,266.57
  5. Step 5: Solve for x
    x = 393,393,846,266.57/636,831.43
  6. Step 6: Final answer
    x = 617,736.23

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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.