Home / 638,399.22-880,997.07-351,929.64

Finding the Fourth Proportional to 638,399.22, 880,997.07 and 351,929.64

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Solution

The fourth proportional to 638,399.22, 880,997.07 and 351,929.64 is: 485,666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,399.22 : 880,997.07 = 351,929.64 : x
  2. Step 2: Convert to fraction form
    638,399.22/880,997.07 = 351,929.64/x
  3. Step 3: Cross multiply
    638,399.22x = 880,997.07 × 351,929.64
  4. Step 4: Simplify right side
    638,399.22x = 310,048,981,686.16
  5. Step 5: Solve for x
    x = 310,048,981,686.16/638,399.22
  6. Step 6: Final answer
    x = 485,666.29

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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.