Home / 763,327.40-1,144,991.10-443,150.60

Finding the Fourth Proportional to 763,327.40, 1,144,991.10 and 443,150.60

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Solution

The fourth proportional to 763,327.40, 1,144,991.10 and 443,150.60 is: 664,725.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,327.40 : 1,144,991.10 = 443,150.60 : x
  2. Step 2: Convert to fraction form
    763,327.40/1,144,991.10 = 443,150.60/x
  3. Step 3: Cross multiply
    763,327.40x = 1,144,991.10 × 443,150.60
  4. Step 4: Simplify right side
    763,327.40x = 507,403,492,959.66
  5. Step 5: Solve for x
    x = 507,403,492,959.66/763,327.40
  6. Step 6: Final answer
    x = 664,725.90

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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.