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Finding the Fourth Proportional to 653,487.80, 980,231.70 and 259,503.80

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Solution

The fourth proportional to 653,487.80, 980,231.70 and 259,503.80 is: 389,255.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,487.80 : 980,231.70 = 259,503.80 : x
  2. Step 2: Convert to fraction form
    653,487.80/980,231.70 = 259,503.80/x
  3. Step 3: Cross multiply
    653,487.80x = 980,231.70 × 259,503.80
  4. Step 4: Simplify right side
    653,487.80x = 254,373,851,030.46
  5. Step 5: Solve for x
    x = 254,373,851,030.46/653,487.80
  6. Step 6: Final answer
    x = 389,255.70

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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.