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Finding the Fourth Proportional to 889,640.15, 1,334,866.87 and 484,225.03

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Solution

The fourth proportional to 889,640.15, 1,334,866.87 and 484,225.03 is: 726,558.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,640.15 : 1,334,866.87 = 484,225.03 : x
  2. Step 2: Convert to fraction form
    889,640.15/1,334,866.87 = 484,225.03/x
  3. Step 3: Cross multiply
    889,640.15x = 1,334,866.87 × 484,225.03
  4. Step 4: Simplify right side
    889,640.15x = 646,375,945,624.03
  5. Step 5: Solve for x
    x = 646,375,945,624.03/889,640.15
  6. Step 6: Final answer
    x = 726,558.87

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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.