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Finding the Fourth Proportional to 446,859.60, 670,289.40 and 287,427.30

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Solution

The fourth proportional to 446,859.60, 670,289.40 and 287,427.30 is: 431,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,859.60 : 670,289.40 = 287,427.30 : x
  2. Step 2: Convert to fraction form
    446,859.60/670,289.40 = 287,427.30/x
  3. Step 3: Cross multiply
    446,859.60x = 670,289.40 × 287,427.30
  4. Step 4: Simplify right side
    446,859.60x = 192,659,472,460.62
  5. Step 5: Solve for x
    x = 192,659,472,460.62/446,859.60
  6. Step 6: Final answer
    x = 431,140.95

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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.