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Finding the Fourth Proportional to 638,158.37, 880,658.73 and 347,770.01

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Solution

The fourth proportional to 638,158.37, 880,658.73 and 347,770.01 is: 479,922.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,158.37 : 880,658.73 = 347,770.01 : x
  2. Step 2: Convert to fraction form
    638,158.37/880,658.73 = 347,770.01/x
  3. Step 3: Cross multiply
    638,158.37x = 880,658.73 × 347,770.01
  4. Step 4: Simplify right side
    638,158.37x = 306,266,697,540.33
  5. Step 5: Solve for x
    x = 306,266,697,540.33/638,158.37
  6. Step 6: Final answer
    x = 479,922.72

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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.