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Finding the Fourth Proportional to 461,687.20, 692,530.80 and 411,920.80

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Solution

The fourth proportional to 461,687.20, 692,530.80 and 411,920.80 is: 617,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,687.20 : 692,530.80 = 411,920.80 : x
  2. Step 2: Convert to fraction form
    461,687.20/692,530.80 = 411,920.80/x
  3. Step 3: Cross multiply
    461,687.20x = 692,530.80 × 411,920.80
  4. Step 4: Simplify right side
    461,687.20x = 285,267,841,160.64
  5. Step 5: Solve for x
    x = 285,267,841,160.64/461,687.20
  6. Step 6: Final answer
    x = 617,881.20

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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.