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Finding the Fourth Proportional to 445,705.41, 667,803.57 and 318,700.83

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Solution

The fourth proportional to 445,705.41, 667,803.57 and 318,700.83 is: 477,511.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,705.41 : 667,803.57 = 318,700.83 : x
  2. Step 2: Convert to fraction form
    445,705.41/667,803.57 = 318,700.83/x
  3. Step 3: Cross multiply
    445,705.41x = 667,803.57 × 318,700.83
  4. Step 4: Simplify right side
    445,705.41x = 212,829,552,035.96
  5. Step 5: Solve for x
    x = 212,829,552,035.96/445,705.41
  6. Step 6: Final answer
    x = 477,511.71

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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.