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Finding the Fourth Proportional to 637,520.50, 879,778.32 and 351,039.88

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Solution

The fourth proportional to 637,520.50, 879,778.32 and 351,039.88 is: 484,435.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,520.50 : 879,778.32 = 351,039.88 : x
  2. Step 2: Convert to fraction form
    637,520.50/879,778.32 = 351,039.88/x
  3. Step 3: Cross multiply
    637,520.50x = 879,778.32 × 351,039.88
  4. Step 4: Simplify right side
    637,520.50x = 308,837,275,879.40
  5. Step 5: Solve for x
    x = 308,837,275,879.40/637,520.50
  6. Step 6: Final answer
    x = 484,435.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.