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Finding the Fourth Proportional to 647,851.70, 971,777.55 and 608,453.30

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Solution

The fourth proportional to 647,851.70, 971,777.55 and 608,453.30 is: 912,679.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,851.70 : 971,777.55 = 608,453.30 : x
  2. Step 2: Convert to fraction form
    647,851.70/971,777.55 = 608,453.30/x
  3. Step 3: Cross multiply
    647,851.70x = 971,777.55 × 608,453.30
  4. Step 4: Simplify right side
    647,851.70x = 591,281,257,163.42
  5. Step 5: Solve for x
    x = 591,281,257,163.42/647,851.70
  6. Step 6: Final answer
    x = 912,679.95

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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.