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Finding the Fourth Proportional to 647,907.70, 971,861.55 and 227,226.10

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Solution

The fourth proportional to 647,907.70, 971,861.55 and 227,226.10 is: 340,839.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,907.70 : 971,861.55 = 227,226.10 : x
  2. Step 2: Convert to fraction form
    647,907.70/971,861.55 = 227,226.10/x
  3. Step 3: Cross multiply
    647,907.70x = 971,861.55 × 227,226.10
  4. Step 4: Simplify right side
    647,907.70x = 220,832,309,746.46
  5. Step 5: Solve for x
    x = 220,832,309,746.46/647,907.70
  6. Step 6: Final answer
    x = 340,839.15

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Double scale
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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.