Home / 812,139.04-1,120,754.44-439,601.92

Finding the Fourth Proportional to 812,139.04, 1,120,754.44 and 439,601.92

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Solution

The fourth proportional to 812,139.04, 1,120,754.44 and 439,601.92 is: 606,652.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,139.04 : 1,120,754.44 = 439,601.92 : x
  2. Step 2: Convert to fraction form
    812,139.04/1,120,754.44 = 439,601.92/x
  3. Step 3: Cross multiply
    812,139.04x = 1,120,754.44 × 439,601.92
  4. Step 4: Simplify right side
    812,139.04x = 492,685,803,672.53
  5. Step 5: Solve for x
    x = 492,685,803,672.53/812,139.04
  6. Step 6: Final answer
    x = 606,652.04

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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.