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Finding the Fourth Proportional to 612,197.70, 918,296.55 and 443,361.30

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Solution

The fourth proportional to 612,197.70, 918,296.55 and 443,361.30 is: 665,041.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,197.70 : 918,296.55 = 443,361.30 : x
  2. Step 2: Convert to fraction form
    612,197.70/918,296.55 = 443,361.30/x
  3. Step 3: Cross multiply
    612,197.70x = 918,296.55 × 443,361.30
  4. Step 4: Simplify right side
    612,197.70x = 407,137,152,193.52
  5. Step 5: Solve for x
    x = 407,137,152,193.52/612,197.70
  6. Step 6: Final answer
    x = 665,041.95

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Similar ratio
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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.