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Finding the Fourth Proportional to 629,903.85, 869,229.86 and 357,934.01

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Solution

The fourth proportional to 629,903.85, 869,229.86 and 357,934.01 is: 493,927.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,903.85 : 869,229.86 = 357,934.01 : x
  2. Step 2: Convert to fraction form
    629,903.85/869,229.86 = 357,934.01/x
  3. Step 3: Cross multiply
    629,903.85x = 869,229.86 × 357,934.01
  4. Step 4: Simplify right side
    629,903.85x = 311,126,923,265.72
  5. Step 5: Solve for x
    x = 311,126,923,265.72/629,903.85
  6. Step 6: Final answer
    x = 493,927.64

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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.