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Finding the Fourth Proportional to 629,389.16, 868,567 and 342,909.16

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Solution

The fourth proportional to 629,389.16, 868,567 and 342,909.16 is: 473,220.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,389.16 : 868,567 = 342,909.16 : x
  2. Step 2: Convert to fraction form
    629,389.16/868,567 = 342,909.16/x
  3. Step 3: Cross multiply
    629,389.16x = 868,567 × 342,909.16
  4. Step 4: Simplify right side
    629,389.16x = 297,839,580,373.72
  5. Step 5: Solve for x
    x = 297,839,580,373.72/629,389.16
  6. Step 6: Final answer
    x = 473,220.07

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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.