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Finding the Fourth Proportional to 768,453.12, 1,060,558.72 and 446,163.22

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Solution

The fourth proportional to 768,453.12, 1,060,558.72 and 446,163.22 is: 615,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,453.12 : 1,060,558.72 = 446,163.22 : x
  2. Step 2: Convert to fraction form
    768,453.12/1,060,558.72 = 446,163.22/x
  3. Step 3: Cross multiply
    768,453.12x = 1,060,558.72 × 446,163.22
  4. Step 4: Simplify right side
    768,453.12x = 473,182,292,125.33
  5. Step 5: Solve for x
    x = 473,182,292,125.33/768,453.12
  6. Step 6: Final answer
    x = 615,759.48

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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.