Home / 812,117.87-1,120,709.07-449,533.94

Finding the Fourth Proportional to 812,117.87, 1,120,709.07 and 449,533.94

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Solution

The fourth proportional to 812,117.87, 1,120,709.07 and 449,533.94 is: 620,349.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,117.87 : 1,120,709.07 = 449,533.94 : x
  2. Step 2: Convert to fraction form
    812,117.87/1,120,709.07 = 449,533.94/x
  3. Step 3: Cross multiply
    812,117.87x = 1,120,709.07 × 449,533.94
  4. Step 4: Simplify right side
    812,117.87x = 503,796,758,227.29
  5. Step 5: Solve for x
    x = 503,796,758,227.29/812,117.87
  6. Step 6: Final answer
    x = 620,349.31

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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.