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Finding the Fourth Proportional to 451,453.20, 677,179.80 and 402,464.40

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Solution

The fourth proportional to 451,453.20, 677,179.80 and 402,464.40 is: 603,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,453.20 : 677,179.80 = 402,464.40 : x
  2. Step 2: Convert to fraction form
    451,453.20/677,179.80 = 402,464.40/x
  3. Step 3: Cross multiply
    451,453.20x = 677,179.80 × 402,464.40
  4. Step 4: Simplify right side
    451,453.20x = 272,540,761,899.12
  5. Step 5: Solve for x
    x = 272,540,761,899.12/451,453.20
  6. Step 6: Final answer
    x = 603,696.60

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Double scale
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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.