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Finding the Fourth Proportional to 447,073.20, 670,609.80 and 368,276.40

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Solution

The fourth proportional to 447,073.20, 670,609.80 and 368,276.40 is: 552,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,073.20 : 670,609.80 = 368,276.40 : x
  2. Step 2: Convert to fraction form
    447,073.20/670,609.80 = 368,276.40/x
  3. Step 3: Cross multiply
    447,073.20x = 670,609.80 × 368,276.40
  4. Step 4: Simplify right side
    447,073.20x = 246,969,762,948.72
  5. Step 5: Solve for x
    x = 246,969,762,948.72/447,073.20
  6. Step 6: Final answer
    x = 552,414.60

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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.