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Finding the Fourth Proportional to 522,100.40, 783,150.60 and 439,431.80

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Solution

The fourth proportional to 522,100.40, 783,150.60 and 439,431.80 is: 659,147.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,100.40 : 783,150.60 = 439,431.80 : x
  2. Step 2: Convert to fraction form
    522,100.40/783,150.60 = 439,431.80/x
  3. Step 3: Cross multiply
    522,100.40x = 783,150.60 × 439,431.80
  4. Step 4: Simplify right side
    522,100.40x = 344,141,277,829.08
  5. Step 5: Solve for x
    x = 344,141,277,829.08/522,100.40
  6. Step 6: Final answer
    x = 659,147.70

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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.