Home / 638,223.30-880,736.09-347,837.29

Finding the Fourth Proportional to 638,223.30, 880,736.09 and 347,837.29

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Solution

The fourth proportional to 638,223.30, 880,736.09 and 347,837.29 is: 480,008.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,223.30 : 880,736.09 = 347,837.29 : x
  2. Step 2: Convert to fraction form
    638,223.30/880,736.09 = 347,837.29/x
  3. Step 3: Cross multiply
    638,223.30x = 880,736.09 × 347,837.29
  4. Step 4: Simplify right side
    638,223.30x = 306,352,850,809.77
  5. Step 5: Solve for x
    x = 306,352,850,809.77/638,223.30
  6. Step 6: Final answer
    x = 480,008.88

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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.