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Finding the Fourth Proportional to 768,261.60, 1,060,259.76 and 424,163.88

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Solution

The fourth proportional to 768,261.60, 1,060,259.76 and 424,163.88 is: 585,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,261.60 : 1,060,259.76 = 424,163.88 : x
  2. Step 2: Convert to fraction form
    768,261.60/1,060,259.76 = 424,163.88/x
  3. Step 3: Cross multiply
    768,261.60x = 1,060,259.76 × 424,163.88
  4. Step 4: Simplify right side
    768,261.60x = 449,723,893,609.47
  5. Step 5: Solve for x
    x = 449,723,893,609.47/768,261.60
  6. Step 6: Final answer
    x = 585,378.59

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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.