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Finding the Fourth Proportional to 651,119.80, 976,679.70 and 491,452.60

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Solution

The fourth proportional to 651,119.80, 976,679.70 and 491,452.60 is: 737,178.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,119.80 : 976,679.70 = 491,452.60 : x
  2. Step 2: Convert to fraction form
    651,119.80/976,679.70 = 491,452.60/x
  3. Step 3: Cross multiply
    651,119.80x = 976,679.70 × 491,452.60
  4. Step 4: Simplify right side
    651,119.80x = 479,991,777,932.22
  5. Step 5: Solve for x
    x = 479,991,777,932.22/651,119.80
  6. Step 6: Final answer
    x = 737,178.90

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Half scale
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Double scale
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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.