Home / 638,297.78-880,840.02-351,844.52

Finding the Fourth Proportional to 638,297.78, 880,840.02 and 351,844.52

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Solution

The fourth proportional to 638,297.78, 880,840.02 and 351,844.52 is: 485,539.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,297.78 : 880,840.02 = 351,844.52 : x
  2. Step 2: Convert to fraction form
    638,297.78/880,840.02 = 351,844.52/x
  3. Step 3: Cross multiply
    638,297.78x = 880,840.02 × 351,844.52
  4. Step 4: Simplify right side
    638,297.78x = 309,918,734,033.69
  5. Step 5: Solve for x
    x = 309,918,734,033.69/638,297.78
  6. Step 6: Final answer
    x = 485,539.42

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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.