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Finding the Fourth Proportional to 629,728.08, 869,019.36 and 343,248.24

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Solution

The fourth proportional to 629,728.08, 869,019.36 and 343,248.24 is: 473,679.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,728.08 : 869,019.36 = 343,248.24 : x
  2. Step 2: Convert to fraction form
    629,728.08/869,019.36 = 343,248.24/x
  3. Step 3: Cross multiply
    629,728.08x = 869,019.36 × 343,248.24
  4. Step 4: Simplify right side
    629,728.08x = 298,289,365,845.93
  5. Step 5: Solve for x
    x = 298,289,365,845.93/629,728.08
  6. Step 6: Final answer
    x = 473,679.63

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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.