Home / 638,372.08-880,942.63-347,986.87

Finding the Fourth Proportional to 638,372.08, 880,942.63 and 347,986.87

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Solution

The fourth proportional to 638,372.08, 880,942.63 and 347,986.87 is: 480,215.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,372.08 : 880,942.63 = 347,986.87 : x
  2. Step 2: Convert to fraction form
    638,372.08/880,942.63 = 347,986.87/x
  3. Step 3: Cross multiply
    638,372.08x = 880,942.63 × 347,986.87
  4. Step 4: Simplify right side
    638,372.08x = 306,556,468,463.27
  5. Step 5: Solve for x
    x = 306,556,468,463.27/638,372.08
  6. Step 6: Final answer
    x = 480,215.97

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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.