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Finding the Fourth Proportional to 638,133, 880,619.76 and 347,743.95

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Solution

The fourth proportional to 638,133, 880,619.76 and 347,743.95 is: 479,884.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,133 : 880,619.76 = 347,743.95 : x
  2. Step 2: Convert to fraction form
    638,133/880,619.76 = 347,743.95/x
  3. Step 3: Cross multiply
    638,133x = 880,619.76 × 347,743.95
  4. Step 4: Simplify right side
    638,133x = 306,230,193,790.45
  5. Step 5: Solve for x
    x = 306,230,193,790.45/638,133
  6. Step 6: Final answer
    x = 479,884.59

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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.