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Finding the Fourth Proportional to 447,003.80, 670,505.70 and 442,856.60

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Solution

The fourth proportional to 447,003.80, 670,505.70 and 442,856.60 is: 664,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,003.80 : 670,505.70 = 442,856.60 : x
  2. Step 2: Convert to fraction form
    447,003.80/670,505.70 = 442,856.60/x
  3. Step 3: Cross multiply
    447,003.80x = 670,505.70 × 442,856.60
  4. Step 4: Simplify right side
    447,003.80x = 296,937,874,582.62
  5. Step 5: Solve for x
    x = 296,937,874,582.62/447,003.80
  6. Step 6: Final answer
    x = 664,284.90

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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.