Home / 812,403.84-1,121,077.44-449,817.60

Finding the Fourth Proportional to 812,403.84, 1,121,077.44 and 449,817.60

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Solution

The fourth proportional to 812,403.84, 1,121,077.44 and 449,817.60 is: 620,726.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,403.84 : 1,121,077.44 = 449,817.60 : x
  2. Step 2: Convert to fraction form
    812,403.84/1,121,077.44 = 449,817.60/x
  3. Step 3: Cross multiply
    812,403.84x = 1,121,077.44 × 449,817.60
  4. Step 4: Simplify right side
    812,403.84x = 504,280,363,474.94
  5. Step 5: Solve for x
    x = 504,280,363,474.94/812,403.84
  6. Step 6: Final answer
    x = 620,726.22

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1.5x scale

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.