Home / 812,109.86-1,120,698.04-449,525.94

Finding the Fourth Proportional to 812,109.86, 1,120,698.04 and 449,525.94

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Solution

The fourth proportional to 812,109.86, 1,120,698.04 and 449,525.94 is: 620,338.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,109.86 : 1,120,698.04 = 449,525.94 : x
  2. Step 2: Convert to fraction form
    812,109.86/1,120,698.04 = 449,525.94/x
  3. Step 3: Cross multiply
    812,109.86x = 1,120,698.04 × 449,525.94
  4. Step 4: Simplify right side
    812,109.86x = 503,782,839,887.16
  5. Step 5: Solve for x
    x = 503,782,839,887.16/812,109.86
  6. Step 6: Final answer
    x = 620,338.29

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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.