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Finding the Fourth Proportional to 662,018, 993,222.84 and 381,736.40

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Solution

The fourth proportional to 662,018, 993,222.84 and 381,736.40 is: 572,717.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,018 : 993,222.84 = 381,736.40 : x
  2. Step 2: Convert to fraction form
    662,018/993,222.84 = 381,736.40/x
  3. Step 3: Cross multiply
    662,018x = 993,222.84 × 381,736.40
  4. Step 4: Simplify right side
    662,018x = 379,149,311,339.38
  5. Step 5: Solve for x
    x = 379,149,311,339.38/662,018
  6. Step 6: Final answer
    x = 572,717.53

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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.