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Finding the Fourth Proportional to 447,012.96, 670,960.08 and 328,351.20

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Solution

The fourth proportional to 447,012.96, 670,960.08 and 328,351.20 is: 492,850.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,012.96 : 670,960.08 = 328,351.20 : x
  2. Step 2: Convert to fraction form
    447,012.96/670,960.08 = 328,351.20/x
  3. Step 3: Cross multiply
    447,012.96x = 670,960.08 × 328,351.20
  4. Step 4: Simplify right side
    447,012.96x = 220,310,547,420.10
  5. Step 5: Solve for x
    x = 220,310,547,420.10/447,012.96
  6. Step 6: Final answer
    x = 492,850.47

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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.