Home / 812,477.94-1,121,205.77-449,894.01

Finding the Fourth Proportional to 812,477.94, 1,121,205.77 and 449,894.01

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Solution

The fourth proportional to 812,477.94, 1,121,205.77 and 449,894.01 is: 620,846.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,477.94 : 1,121,205.77 = 449,894.01 : x
  2. Step 2: Convert to fraction form
    812,477.94/1,121,205.77 = 449,894.01/x
  3. Step 3: Cross multiply
    812,477.94x = 1,121,205.77 × 449,894.01
  4. Step 4: Simplify right side
    812,477.94x = 504,423,762,913.67
  5. Step 5: Solve for x
    x = 504,423,762,913.67/812,477.94
  6. Step 6: Final answer
    x = 620,846.10

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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.