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Finding the Fourth Proportional to 768,221.88, 1,060,216.56 and 424,119.48

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Solution

The fourth proportional to 768,221.88, 1,060,216.56 and 424,119.48 is: 585,323.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,221.88 : 1,060,216.56 = 424,119.48 : x
  2. Step 2: Convert to fraction form
    768,221.88/1,060,216.56 = 424,119.48/x
  3. Step 3: Cross multiply
    768,221.88x = 1,060,216.56 × 424,119.48
  4. Step 4: Simplify right side
    768,221.88x = 449,658,496,114.59
  5. Step 5: Solve for x
    x = 449,658,496,114.59/768,221.88
  6. Step 6: Final answer
    x = 585,323.73

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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.