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Finding the Fourth Proportional to 543,336.60, 815,004.90 and 409,492.20

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Solution

The fourth proportional to 543,336.60, 815,004.90 and 409,492.20 is: 614,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,336.60 : 815,004.90 = 409,492.20 : x
  2. Step 2: Convert to fraction form
    543,336.60/815,004.90 = 409,492.20/x
  3. Step 3: Cross multiply
    543,336.60x = 815,004.90 × 409,492.20
  4. Step 4: Simplify right side
    543,336.60x = 333,738,149,511.78
  5. Step 5: Solve for x
    x = 333,738,149,511.78/543,336.60
  6. Step 6: Final answer
    x = 614,238.30

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Similar ratio
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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.