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Finding the Fourth Proportional to 647,329.70, 971,431.95 and 363,019.70

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Solution

The fourth proportional to 647,329.70, 971,431.95 and 363,019.70 is: 544,774.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,329.70 : 971,431.95 = 363,019.70 : x
  2. Step 2: Convert to fraction form
    647,329.70/971,431.95 = 363,019.70/x
  3. Step 3: Cross multiply
    647,329.70x = 971,431.95 × 363,019.70
  4. Step 4: Simplify right side
    647,329.70x = 352,648,935,059.42
  5. Step 5: Solve for x
    x = 352,648,935,059.42/647,329.70
  6. Step 6: Final answer
    x = 544,774.84

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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.