Home / 768,515.01-1,060,640.66-639,225.37

Finding the Fourth Proportional to 768,515.01, 1,060,640.66 and 639,225.37

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Solution

The fourth proportional to 768,515.01, 1,060,640.66 and 639,225.37 is: 882,205.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,515.01 : 1,060,640.66 = 639,225.37 : x
  2. Step 2: Convert to fraction form
    768,515.01/1,060,640.66 = 639,225.37/x
  3. Step 3: Cross multiply
    768,515.01x = 1,060,640.66 × 639,225.37
  4. Step 4: Simplify right side
    768,515.01x = 677,988,418,325.54
  5. Step 5: Solve for x
    x = 677,988,418,325.54/768,515.01
  6. Step 6: Final answer
    x = 882,205.82

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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.