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Finding the Fourth Proportional to 447,079.80, 670,619.70 and 443,969.40

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Solution

The fourth proportional to 447,079.80, 670,619.70 and 443,969.40 is: 665,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,079.80 : 670,619.70 = 443,969.40 : x
  2. Step 2: Convert to fraction form
    447,079.80/670,619.70 = 443,969.40/x
  3. Step 3: Cross multiply
    447,079.80x = 670,619.70 × 443,969.40
  4. Step 4: Simplify right side
    447,079.80x = 297,734,625,837.18
  5. Step 5: Solve for x
    x = 297,734,625,837.18/447,079.80
  6. Step 6: Final answer
    x = 665,954.10

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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.