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Finding the Fourth Proportional to 445,706.41, 667,805.07 and 318,701.83

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Solution

The fourth proportional to 445,706.41, 667,805.07 and 318,701.83 is: 477,513.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,706.41 : 667,805.07 = 318,701.83 : x
  2. Step 2: Convert to fraction form
    445,706.41/667,805.07 = 318,701.83/x
  3. Step 3: Cross multiply
    445,706.41x = 667,805.07 × 318,701.83
  4. Step 4: Simplify right side
    445,706.41x = 212,830,697,892.28
  5. Step 5: Solve for x
    x = 212,830,697,892.28/445,706.41
  6. Step 6: Final answer
    x = 477,513.21

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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.