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Finding the Fourth Proportional to 637,442.28, 879,406.76 and 379,267.60

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Solution

The fourth proportional to 637,442.28, 879,406.76 and 379,267.60 is: 523,232.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,442.28 : 879,406.76 = 379,267.60 : x
  2. Step 2: Convert to fraction form
    637,442.28/879,406.76 = 379,267.60/x
  3. Step 3: Cross multiply
    637,442.28x = 879,406.76 × 379,267.60
  4. Step 4: Simplify right side
    637,442.28x = 333,530,491,288.98
  5. Step 5: Solve for x
    x = 333,530,491,288.98/637,442.28
  6. Step 6: Final answer
    x = 523,232.46

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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.