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Finding the Fourth Proportional to 411,635, 617,277.36 and 253,821.08

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Solution

The fourth proportional to 411,635, 617,277.36 and 253,821.08 is: 380,623.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,635 : 617,277.36 = 253,821.08 : x
  2. Step 2: Convert to fraction form
    411,635/617,277.36 = 253,821.08/x
  3. Step 3: Cross multiply
    411,635x = 617,277.36 × 253,821.08
  4. Step 4: Simplify right side
    411,635x = 156,678,006,174.75
  5. Step 5: Solve for x
    x = 156,678,006,174.75/411,635
  6. Step 6: Final answer
    x = 380,623.63

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1.5x scale

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.