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Finding the Fourth Proportional to 629,970.70, 869,337.91 and 358,033.86

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Solution

The fourth proportional to 629,970.70, 869,337.91 and 358,033.86 is: 494,074.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,970.70 : 869,337.91 = 358,033.86 : x
  2. Step 2: Convert to fraction form
    629,970.70/869,337.91 = 358,033.86/x
  3. Step 3: Cross multiply
    629,970.70x = 869,337.91 × 358,033.86
  4. Step 4: Simplify right side
    629,970.70x = 311,252,407,561.63
  5. Step 5: Solve for x
    x = 311,252,407,561.63/629,970.70
  6. Step 6: Final answer
    x = 494,074.42

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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.