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Finding the Fourth Proportional to 629,969.70, 869,336.53 and 358,032.86

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Solution

The fourth proportional to 629,969.70, 869,336.53 and 358,032.86 is: 494,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,969.70 : 869,336.53 = 358,032.86 : x
  2. Step 2: Convert to fraction form
    629,969.70/869,336.53 = 358,032.86/x
  3. Step 3: Cross multiply
    629,969.70x = 869,336.53 × 358,032.86
  4. Step 4: Simplify right side
    629,969.70x = 311,251,039,791.69
  5. Step 5: Solve for x
    x = 311,251,039,791.69/629,969.70
  6. Step 6: Final answer
    x = 494,073.03

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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.