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Finding the Fourth Proportional to 647,564.55, 971,346.83 and 505,846.95

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Solution

The fourth proportional to 647,564.55, 971,346.83 and 505,846.95 is: 758,770.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,564.55 : 971,346.83 = 505,846.95 : x
  2. Step 2: Convert to fraction form
    647,564.55/971,346.83 = 505,846.95/x
  3. Step 3: Cross multiply
    647,564.55x = 971,346.83 × 505,846.95
  4. Step 4: Simplify right side
    647,564.55x = 491,352,828,818.43
  5. Step 5: Solve for x
    x = 491,352,828,818.43/647,564.55
  6. Step 6: Final answer
    x = 758,770.43

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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.