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Finding the Fourth Proportional to 629,963.40, 869,372.64 and 358,077.03

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Solution

The fourth proportional to 629,963.40, 869,372.64 and 358,077.03 is: 494,159.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,963.40 : 869,372.64 = 358,077.03 : x
  2. Step 2: Convert to fraction form
    629,963.40/869,372.64 = 358,077.03/x
  3. Step 3: Cross multiply
    629,963.40x = 869,372.64 × 358,077.03
  4. Step 4: Simplify right side
    629,963.40x = 311,302,372,894.46
  5. Step 5: Solve for x
    x = 311,302,372,894.46/629,963.40
  6. Step 6: Final answer
    x = 494,159.46

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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.