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Finding the Fourth Proportional to 653,453.40, 980,180.10 and 429,504.60

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Solution

The fourth proportional to 653,453.40, 980,180.10 and 429,504.60 is: 644,256.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,453.40 : 980,180.10 = 429,504.60 : x
  2. Step 2: Convert to fraction form
    653,453.40/980,180.10 = 429,504.60/x
  3. Step 3: Cross multiply
    653,453.40x = 980,180.10 × 429,504.60
  4. Step 4: Simplify right side
    653,453.40x = 420,991,861,778.46
  5. Step 5: Solve for x
    x = 420,991,861,778.46/653,453.40
  6. Step 6: Final answer
    x = 644,256.90

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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.