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Finding the Fourth Proportional to 720,485.86, 1,080,727.34 and 676,641.98

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Solution

The fourth proportional to 720,485.86, 1,080,727.34 and 676,641.98 is: 1,014,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,485.86 : 1,080,727.34 = 676,641.98 : x
  2. Step 2: Convert to fraction form
    720,485.86/1,080,727.34 = 676,641.98/x
  3. Step 3: Cross multiply
    720,485.86x = 1,080,727.34 × 676,641.98
  4. Step 4: Simplify right side
    720,485.86x = 731,265,487,177.73
  5. Step 5: Solve for x
    x = 731,265,487,177.73/720,485.86
  6. Step 6: Final answer
    x = 1,014,961.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.