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Finding the Fourth Proportional to 629,521.12, 868,735.28 and 343,040.32

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Solution

The fourth proportional to 629,521.12, 868,735.28 and 343,040.32 is: 473,393.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,521.12 : 868,735.28 = 343,040.32 : x
  2. Step 2: Convert to fraction form
    629,521.12/868,735.28 = 343,040.32/x
  3. Step 3: Cross multiply
    629,521.12x = 868,735.28 × 343,040.32
  4. Step 4: Simplify right side
    629,521.12x = 298,011,228,446.49
  5. Step 5: Solve for x
    x = 298,011,228,446.49/629,521.12
  6. Step 6: Final answer
    x = 473,393.54

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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.