Home / 856,561.60-1,284,259.20-324,002.80

Finding the Fourth Proportional to 856,561.60, 1,284,259.20 and 324,002.80

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Solution

The fourth proportional to 856,561.60, 1,284,259.20 and 324,002.80 is: 485,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,561.60 : 1,284,259.20 = 324,002.80 : x
  2. Step 2: Convert to fraction form
    856,561.60/1,284,259.20 = 324,002.80/x
  3. Step 3: Cross multiply
    856,561.60x = 1,284,259.20 × 324,002.80
  4. Step 4: Simplify right side
    856,561.60x = 416,103,576,725.76
  5. Step 5: Solve for x
    x = 416,103,576,725.76/856,561.60
  6. Step 6: Final answer
    x = 485,783.60

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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.