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Finding the Fourth Proportional to 767,808.60, 1,151,712.90 and 341,343.60

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Solution

The fourth proportional to 767,808.60, 1,151,712.90 and 341,343.60 is: 512,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,808.60 : 1,151,712.90 = 341,343.60 : x
  2. Step 2: Convert to fraction form
    767,808.60/1,151,712.90 = 341,343.60/x
  3. Step 3: Cross multiply
    767,808.60x = 1,151,712.90 × 341,343.60
  4. Step 4: Simplify right side
    767,808.60x = 393,129,827,452.44
  5. Step 5: Solve for x
    x = 393,129,827,452.44/767,808.60
  6. Step 6: Final answer
    x = 512,015.40

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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.