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Finding the Fourth Proportional to 637,940.40, 880,358.58 and 347,550.54

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Solution

The fourth proportional to 637,940.40, 880,358.58 and 347,550.54 is: 479,620.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,940.40 : 880,358.58 = 347,550.54 : x
  2. Step 2: Convert to fraction form
    637,940.40/880,358.58 = 347,550.54/x
  3. Step 3: Cross multiply
    637,940.40x = 880,358.58 × 347,550.54
  4. Step 4: Simplify right side
    637,940.40x = 305,969,099,872.63
  5. Step 5: Solve for x
    x = 305,969,099,872.63/637,940.40
  6. Step 6: Final answer
    x = 479,620.20

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1.5x scale

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.