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Finding the Fourth Proportional to 552,085.40, 828,128.10 and 328,136.60

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Solution

The fourth proportional to 552,085.40, 828,128.10 and 328,136.60 is: 492,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,085.40 : 828,128.10 = 328,136.60 : x
  2. Step 2: Convert to fraction form
    552,085.40/828,128.10 = 328,136.60/x
  3. Step 3: Cross multiply
    552,085.40x = 828,128.10 × 328,136.60
  4. Step 4: Simplify right side
    552,085.40x = 271,739,139,098.46
  5. Step 5: Solve for x
    x = 271,739,139,098.46/552,085.40
  6. Step 6: Final answer
    x = 492,204.90

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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.