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Finding the Fourth Proportional to 505,739.40, 758,609.10 and 443,531.40

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Solution

The fourth proportional to 505,739.40, 758,609.10 and 443,531.40 is: 665,297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,739.40 : 758,609.10 = 443,531.40 : x
  2. Step 2: Convert to fraction form
    505,739.40/758,609.10 = 443,531.40/x
  3. Step 3: Cross multiply
    505,739.40x = 758,609.10 × 443,531.40
  4. Step 4: Simplify right side
    505,739.40x = 336,466,956,175.74
  5. Step 5: Solve for x
    x = 336,466,956,175.74/505,739.40
  6. Step 6: Final answer
    x = 665,297.10

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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.