Home / 638,358.22-880,921.20-347,967.28

Finding the Fourth Proportional to 638,358.22, 880,921.20 and 347,967.28

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Solution

The fourth proportional to 638,358.22, 880,921.20 and 347,967.28 is: 480,187.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,358.22 : 880,921.20 = 347,967.28 : x
  2. Step 2: Convert to fraction form
    638,358.22/880,921.20 = 347,967.28/x
  3. Step 3: Cross multiply
    638,358.22x = 880,921.20 × 347,967.28
  4. Step 4: Simplify right side
    638,358.22x = 306,531,753,858.34
  5. Step 5: Solve for x
    x = 306,531,753,858.34/638,358.22
  6. Step 6: Final answer
    x = 480,187.68

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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.