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Finding the Fourth Proportional to 629,229.54, 943,479.81 and 429,790.94

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Solution

The fourth proportional to 629,229.54, 943,479.81 and 429,790.94 is: 644,437.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,229.54 : 943,479.81 = 429,790.94 : x
  2. Step 2: Convert to fraction form
    629,229.54/943,479.81 = 429,790.94/x
  3. Step 3: Cross multiply
    629,229.54x = 943,479.81 × 429,790.94
  4. Step 4: Simplify right side
    629,229.54x = 405,499,069,693.52
  5. Step 5: Solve for x
    x = 405,499,069,693.52/629,229.54
  6. Step 6: Final answer
    x = 644,437.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.