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Finding the Fourth Proportional to 451,636.80, 677,455.20 and 378,153.60

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Solution

The fourth proportional to 451,636.80, 677,455.20 and 378,153.60 is: 567,230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,636.80 : 677,455.20 = 378,153.60 : x
  2. Step 2: Convert to fraction form
    451,636.80/677,455.20 = 378,153.60/x
  3. Step 3: Cross multiply
    451,636.80x = 677,455.20 × 378,153.60
  4. Step 4: Simplify right side
    451,636.80x = 256,182,122,718.72
  5. Step 5: Solve for x
    x = 256,182,122,718.72/451,636.80
  6. Step 6: Final answer
    x = 567,230.40

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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.