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Finding the Fourth Proportional to 491,078.88, 677,226.96 and 454,425.12

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Solution

The fourth proportional to 491,078.88, 677,226.96 and 454,425.12 is: 626,679.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,078.88 : 677,226.96 = 454,425.12 : x
  2. Step 2: Convert to fraction form
    491,078.88/677,226.96 = 454,425.12/x
  3. Step 3: Cross multiply
    491,078.88x = 677,226.96 × 454,425.12
  4. Step 4: Simplify right side
    491,078.88x = 307,748,942,565.24
  5. Step 5: Solve for x
    x = 307,748,942,565.24/491,078.88
  6. Step 6: Final answer
    x = 626,679.25

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.