Home / 638,203.24-880,680.90-351,707.32

Finding the Fourth Proportional to 638,203.24, 880,680.90 and 351,707.32

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Solution

The fourth proportional to 638,203.24, 880,680.90 and 351,707.32 is: 485,334.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,203.24 : 880,680.90 = 351,707.32 : x
  2. Step 2: Convert to fraction form
    638,203.24/880,680.90 = 351,707.32/x
  3. Step 3: Cross multiply
    638,203.24x = 880,680.90 × 351,707.32
  4. Step 4: Simplify right side
    638,203.24x = 309,741,919,114.19
  5. Step 5: Solve for x
    x = 309,741,919,114.19/638,203.24
  6. Step 6: Final answer
    x = 485,334.29

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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.