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Finding the Fourth Proportional to 629,388.16, 868,565.62 and 342,908.16

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Solution

The fourth proportional to 629,388.16, 868,565.62 and 342,908.16 is: 473,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,388.16 : 868,565.62 = 342,908.16 : x
  2. Step 2: Convert to fraction form
    629,388.16/868,565.62 = 342,908.16/x
  3. Step 3: Cross multiply
    629,388.16x = 868,565.62 × 342,908.16
  4. Step 4: Simplify right side
    629,388.16x = 297,838,238,593.46
  5. Step 5: Solve for x
    x = 297,838,238,593.46/629,388.16
  6. Step 6: Final answer
    x = 473,218.69

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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.