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Finding the Fourth Proportional to 617,898.20, 926,156.10 and 262,851.80

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Solution

The fourth proportional to 617,898.20, 926,156.10 and 262,851.80 is: 393,983.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,898.20 : 926,156.10 = 262,851.80 : x
  2. Step 2: Convert to fraction form
    617,898.20/926,156.10 = 262,851.80/x
  3. Step 3: Cross multiply
    617,898.20x = 926,156.10 × 262,851.80
  4. Step 4: Simplify right side
    617,898.20x = 243,441,797,965.98
  5. Step 5: Solve for x
    x = 243,441,797,965.98/617,898.20
  6. Step 6: Final answer
    x = 393,983.67

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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.