Home / 872,509.94-1,204,136.43-485,398.28

Finding the Fourth Proportional to 872,509.94, 1,204,136.43 and 485,398.28

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Solution

The fourth proportional to 872,509.94, 1,204,136.43 and 485,398.28 is: 669,890.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,509.94 : 1,204,136.43 = 485,398.28 : x
  2. Step 2: Convert to fraction form
    872,509.94/1,204,136.43 = 485,398.28/x
  3. Step 3: Cross multiply
    872,509.94x = 1,204,136.43 × 485,398.28
  4. Step 4: Simplify right side
    872,509.94x = 584,485,756,837.93
  5. Step 5: Solve for x
    x = 584,485,756,837.93/872,509.94
  6. Step 6: Final answer
    x = 669,890.09

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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.