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Finding the Fourth Proportional to 409,764.60, 614,646.90 and 326,820.60

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Solution

The fourth proportional to 409,764.60, 614,646.90 and 326,820.60 is: 490,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,764.60 : 614,646.90 = 326,820.60 : x
  2. Step 2: Convert to fraction form
    409,764.60/614,646.90 = 326,820.60/x
  3. Step 3: Cross multiply
    409,764.60x = 614,646.90 × 326,820.60
  4. Step 4: Simplify right side
    409,764.60x = 200,879,268,646.14
  5. Step 5: Solve for x
    x = 200,879,268,646.14/409,764.60
  6. Step 6: Final answer
    x = 490,230.90

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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.