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Finding the Fourth Proportional to 446,872.60, 670,308.90 and 287,440.30

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Solution

The fourth proportional to 446,872.60, 670,308.90 and 287,440.30 is: 431,160.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,872.60 : 670,308.90 = 287,440.30 : x
  2. Step 2: Convert to fraction form
    446,872.60/670,308.90 = 287,440.30/x
  3. Step 3: Cross multiply
    446,872.60x = 670,308.90 × 287,440.30
  4. Step 4: Simplify right side
    446,872.60x = 192,673,791,308.67
  5. Step 5: Solve for x
    x = 192,673,791,308.67/446,872.60
  6. Step 6: Final answer
    x = 431,160.45

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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.