Home / 642,118.60-963,187.26-305,193.61

Finding the Fourth Proportional to 642,118.60, 963,187.26 and 305,193.61

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Solution

The fourth proportional to 642,118.60, 963,187.26 and 305,193.61 is: 457,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,118.60 : 963,187.26 = 305,193.61 : x
  2. Step 2: Convert to fraction form
    642,118.60/963,187.26 = 305,193.61/x
  3. Step 3: Cross multiply
    642,118.60x = 963,187.26 × 305,193.61
  4. Step 4: Simplify right side
    642,118.60x = 293,958,596,985.41
  5. Step 5: Solve for x
    x = 293,958,596,985.41/642,118.60
  6. Step 6: Final answer
    x = 457,794.86

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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.