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Finding the Fourth Proportional to 637,872.30, 880,313.40 and 351,443.88

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Solution

The fourth proportional to 637,872.30, 880,313.40 and 351,443.88 is: 485,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,872.30 : 880,313.40 = 351,443.88 : x
  2. Step 2: Convert to fraction form
    637,872.30/880,313.40 = 351,443.88/x
  3. Step 3: Cross multiply
    637,872.30x = 880,313.40 × 351,443.88
  4. Step 4: Simplify right side
    637,872.30x = 309,380,756,911.99
  5. Step 5: Solve for x
    x = 309,380,756,911.99/637,872.30
  6. Step 6: Final answer
    x = 485,019.90

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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.