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Finding the Fourth Proportional to 637,660.76, 879,958.59 and 347,275.49

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Solution

The fourth proportional to 637,660.76, 879,958.59 and 347,275.49 is: 479,232.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,660.76 : 879,958.59 = 347,275.49 : x
  2. Step 2: Convert to fraction form
    637,660.76/879,958.59 = 347,275.49/x
  3. Step 3: Cross multiply
    637,660.76x = 879,958.59 × 347,275.49
  4. Step 4: Simplify right side
    637,660.76x = 305,588,044,819.88
  5. Step 5: Solve for x
    x = 305,588,044,819.88/637,660.76
  6. Step 6: Final answer
    x = 479,232.95

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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.