Home / 645,664.40-968,059.20-329,861.60

Finding the Fourth Proportional to 645,664.40, 968,059.20 and 329,861.60

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Solution

The fourth proportional to 645,664.40, 968,059.20 and 329,861.60 is: 494,568.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,664.40 : 968,059.20 = 329,861.60 : x
  2. Step 2: Convert to fraction form
    645,664.40/968,059.20 = 329,861.60/x
  3. Step 3: Cross multiply
    645,664.40x = 968,059.20 × 329,861.60
  4. Step 4: Simplify right side
    645,664.40x = 319,325,556,606.72
  5. Step 5: Solve for x
    x = 319,325,556,606.72/645,664.40
  6. Step 6: Final answer
    x = 494,568.94

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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.