Home / 629,981.52-869,388.84-358,006.56

Finding the Fourth Proportional to 629,981.52, 869,388.84 and 358,006.56

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Solution

The fourth proportional to 629,981.52, 869,388.84 and 358,006.56 is: 494,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,981.52 : 869,388.84 = 358,006.56 : x
  2. Step 2: Convert to fraction form
    629,981.52/869,388.84 = 358,006.56/x
  3. Step 3: Cross multiply
    629,981.52x = 869,388.84 × 358,006.56
  4. Step 4: Simplify right side
    629,981.52x = 311,246,907,910.79
  5. Step 5: Solve for x
    x = 311,246,907,910.79/629,981.52
  6. Step 6: Final answer
    x = 494,057.20

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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.