Home / 810,679.48-1,118,742.18-443,157.20

Finding the Fourth Proportional to 810,679.48, 1,118,742.18 and 443,157.20

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Solution

The fourth proportional to 810,679.48, 1,118,742.18 and 443,157.20 is: 611,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,679.48 : 1,118,742.18 = 443,157.20 : x
  2. Step 2: Convert to fraction form
    810,679.48/1,118,742.18 = 443,157.20/x
  3. Step 3: Cross multiply
    810,679.48x = 1,118,742.18 × 443,157.20
  4. Step 4: Simplify right side
    810,679.48x = 495,778,652,010.70
  5. Step 5: Solve for x
    x = 495,778,652,010.70/810,679.48
  6. Step 6: Final answer
    x = 611,559.39

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.