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Finding the Fourth Proportional to 629,309.70, 868,448.97 and 342,831.87

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Solution

The fourth proportional to 629,309.70, 868,448.97 and 342,831.87 is: 473,108.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,309.70 : 868,448.97 = 342,831.87 : x
  2. Step 2: Convert to fraction form
    629,309.70/868,448.97 = 342,831.87/x
  3. Step 3: Cross multiply
    629,309.70x = 868,448.97 × 342,831.87
  4. Step 4: Simplify right side
    629,309.70x = 297,731,984,384.67
  5. Step 5: Solve for x
    x = 297,731,984,384.67/629,309.70
  6. Step 6: Final answer
    x = 473,108.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.