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Finding the Fourth Proportional to 445,885.20, 668,827.80 and 286,452.90

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Solution

The fourth proportional to 445,885.20, 668,827.80 and 286,452.90 is: 429,679.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,885.20 : 668,827.80 = 286,452.90 : x
  2. Step 2: Convert to fraction form
    445,885.20/668,827.80 = 286,452.90/x
  3. Step 3: Cross multiply
    445,885.20x = 668,827.80 × 286,452.90
  4. Step 4: Simplify right side
    445,885.20x = 191,587,662,910.62
  5. Step 5: Solve for x
    x = 191,587,662,910.62/445,885.20
  6. Step 6: Final answer
    x = 429,679.35

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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.