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Finding the Fourth Proportional to 424,776.44, 636,807.54 and 284,105.72

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Solution

The fourth proportional to 424,776.44, 636,807.54 and 284,105.72 is: 425,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,776.44 : 636,807.54 = 284,105.72 : x
  2. Step 2: Convert to fraction form
    424,776.44/636,807.54 = 284,105.72/x
  3. Step 3: Cross multiply
    424,776.44x = 636,807.54 × 284,105.72
  4. Step 4: Simplify right side
    424,776.44x = 180,920,664,653.13
  5. Step 5: Solve for x
    x = 180,920,664,653.13/424,776.44
  6. Step 6: Final answer
    x = 425,919.73

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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.