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Finding the Fourth Proportional to 525,090.80, 787,636.20 and 324,761.60

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Solution

The fourth proportional to 525,090.80, 787,636.20 and 324,761.60 is: 487,142.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,090.80 : 787,636.20 = 324,761.60 : x
  2. Step 2: Convert to fraction form
    525,090.80/787,636.20 = 324,761.60/x
  3. Step 3: Cross multiply
    525,090.80x = 787,636.20 × 324,761.60
  4. Step 4: Simplify right side
    525,090.80x = 255,793,992,529.92
  5. Step 5: Solve for x
    x = 255,793,992,529.92/525,090.80
  6. Step 6: Final answer
    x = 487,142.40

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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.