Home / 929,764.80-1,394,647.20-331,401.60

Finding the Fourth Proportional to 929,764.80, 1,394,647.20 and 331,401.60

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Solution

The fourth proportional to 929,764.80, 1,394,647.20 and 331,401.60 is: 497,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,764.80 : 1,394,647.20 = 331,401.60 : x
  2. Step 2: Convert to fraction form
    929,764.80/1,394,647.20 = 331,401.60/x
  3. Step 3: Cross multiply
    929,764.80x = 1,394,647.20 × 331,401.60
  4. Step 4: Simplify right side
    929,764.80x = 462,188,313,515.52
  5. Step 5: Solve for x
    x = 462,188,313,515.52/929,764.80
  6. Step 6: Final answer
    x = 497,102.40

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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.