Home / 638,357.22-880,919.82-347,966.28

Finding the Fourth Proportional to 638,357.22, 880,919.82 and 347,966.28

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Solution

The fourth proportional to 638,357.22, 880,919.82 and 347,966.28 is: 480,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,357.22 : 880,919.82 = 347,966.28 : x
  2. Step 2: Convert to fraction form
    638,357.22/880,919.82 = 347,966.28/x
  3. Step 3: Cross multiply
    638,357.22x = 880,919.82 × 347,966.28
  4. Step 4: Simplify right side
    638,357.22x = 306,530,392,743.67
  5. Step 5: Solve for x
    x = 306,530,392,743.67/638,357.22
  6. Step 6: Final answer
    x = 480,186.30

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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.