Home / 812,450.77-1,121,168.32-449,866.82

Finding the Fourth Proportional to 812,450.77, 1,121,168.32 and 449,866.82

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Solution

The fourth proportional to 812,450.77, 1,121,168.32 and 449,866.82 is: 620,808.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,450.77 : 1,121,168.32 = 449,866.82 : x
  2. Step 2: Convert to fraction form
    812,450.77/1,121,168.32 = 449,866.82/x
  3. Step 3: Cross multiply
    812,450.77x = 1,121,168.32 × 449,866.82
  4. Step 4: Simplify right side
    812,450.77x = 504,376,426,803.14
  5. Step 5: Solve for x
    x = 504,376,426,803.14/812,450.77
  6. Step 6: Final answer
    x = 620,808.60

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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.