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Finding the Fourth Proportional to 637,940.88, 880,348.08 and 347,555.91

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Solution

The fourth proportional to 637,940.88, 880,348.08 and 347,555.91 is: 479,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,940.88 : 880,348.08 = 347,555.91 : x
  2. Step 2: Convert to fraction form
    637,940.88/880,348.08 = 347,555.91/x
  3. Step 3: Cross multiply
    637,940.88x = 880,348.08 × 347,555.91
  4. Step 4: Simplify right side
    637,940.88x = 305,970,178,061.15
  5. Step 5: Solve for x
    x = 305,970,178,061.15/637,940.88
  6. Step 6: Final answer
    x = 479,621.53

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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.