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Finding the Fourth Proportional to 551,426.80, 827,140.20 and 411,458.80

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Solution

The fourth proportional to 551,426.80, 827,140.20 and 411,458.80 is: 617,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,426.80 : 827,140.20 = 411,458.80 : x
  2. Step 2: Convert to fraction form
    551,426.80/827,140.20 = 411,458.80/x
  3. Step 3: Cross multiply
    551,426.80x = 827,140.20 × 411,458.80
  4. Step 4: Simplify right side
    551,426.80x = 340,334,114,123.76
  5. Step 5: Solve for x
    x = 340,334,114,123.76/551,426.80
  6. Step 6: Final answer
    x = 617,188.20

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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.