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Finding the Fourth Proportional to 452,564.20, 678,846.30 and 445,565.80

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Solution

The fourth proportional to 452,564.20, 678,846.30 and 445,565.80 is: 668,348.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,564.20 : 678,846.30 = 445,565.80 : x
  2. Step 2: Convert to fraction form
    452,564.20/678,846.30 = 445,565.80/x
  3. Step 3: Cross multiply
    452,564.20x = 678,846.30 × 445,565.80
  4. Step 4: Simplify right side
    452,564.20x = 302,470,694,736.54
  5. Step 5: Solve for x
    x = 302,470,694,736.54/452,564.20
  6. Step 6: Final answer
    x = 668,348.70

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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.