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Finding the Fourth Proportional to 637,800, 880,164 and 351,319.20

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Solution

The fourth proportional to 637,800, 880,164 and 351,319.20 is: 484,820.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,800 : 880,164 = 351,319.20 : x
  2. Step 2: Convert to fraction form
    637,800/880,164 = 351,319.20/x
  3. Step 3: Cross multiply
    637,800x = 880,164 × 351,319.20
  4. Step 4: Simplify right side
    637,800x = 309,218,512,348.80
  5. Step 5: Solve for x
    x = 309,218,512,348.80/637,800
  6. Step 6: Final answer
    x = 484,820.50

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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.