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Finding the Fourth Proportional to 629,715.36, 869,007.72 and 343,229.68

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Solution

The fourth proportional to 629,715.36, 869,007.72 and 343,229.68 is: 473,657.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,715.36 : 869,007.72 = 343,229.68 : x
  2. Step 2: Convert to fraction form
    629,715.36/869,007.72 = 343,229.68/x
  3. Step 3: Cross multiply
    629,715.36x = 869,007.72 × 343,229.68
  4. Step 4: Simplify right side
    629,715.36x = 298,269,241,653.13
  5. Step 5: Solve for x
    x = 298,269,241,653.13/629,715.36
  6. Step 6: Final answer
    x = 473,657.24

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1.5x scale

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.