Home / 782,151.30-1,078,811.10-717,827.82

Finding the Fourth Proportional to 782,151.30, 1,078,811.10 and 717,827.82

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Solution

The fourth proportional to 782,151.30, 1,078,811.10 and 717,827.82 is: 990,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,151.30 : 1,078,811.10 = 717,827.82 : x
  2. Step 2: Convert to fraction form
    782,151.30/1,078,811.10 = 717,827.82/x
  3. Step 3: Cross multiply
    782,151.30x = 1,078,811.10 × 717,827.82
  4. Step 4: Simplify right side
    782,151.30x = 774,400,620,104.80
  5. Step 5: Solve for x
    x = 774,400,620,104.80/782,151.30
  6. Step 6: Final answer
    x = 990,090.56

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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.