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Finding the Fourth Proportional to 631,760.88, 869,633.10 and 551,047.86

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Solution

The fourth proportional to 631,760.88, 869,633.10 and 551,047.86 is: 758,529.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,760.88 : 869,633.10 = 551,047.86 : x
  2. Step 2: Convert to fraction form
    631,760.88/869,633.10 = 551,047.86/x
  3. Step 3: Cross multiply
    631,760.88x = 869,633.10 × 551,047.86
  4. Step 4: Simplify right side
    631,760.88x = 479,209,458,740.17
  5. Step 5: Solve for x
    x = 479,209,458,740.17/631,760.88
  6. Step 6: Final answer
    x = 758,529.81

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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.