Home / 483,985.46-726,012.75-128,997.62

Finding the Fourth Proportional to 483,985.46, 726,012.75 and 128,997.62

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Solution

The fourth proportional to 483,985.46, 726,012.75 and 128,997.62 is: 193,505.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,985.46 : 726,012.75 = 128,997.62 : x
  2. Step 2: Convert to fraction form
    483,985.46/726,012.75 = 128,997.62/x
  3. Step 3: Cross multiply
    483,985.46x = 726,012.75 × 128,997.62
  4. Step 4: Simplify right side
    483,985.46x = 93,653,916,839.66
  5. Step 5: Solve for x
    x = 93,653,916,839.66/483,985.46
  6. Step 6: Final answer
    x = 193,505.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.