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Finding the Fourth Proportional to 660,576.67, 911,565.29 and 374,098.80

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Solution

The fourth proportional to 660,576.67, 911,565.29 and 374,098.80 is: 516,239.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,576.67 : 911,565.29 = 374,098.80 : x
  2. Step 2: Convert to fraction form
    660,576.67/911,565.29 = 374,098.80/x
  3. Step 3: Cross multiply
    660,576.67x = 911,565.29 × 374,098.80
  4. Step 4: Simplify right side
    660,576.67x = 341,015,485,464.27
  5. Step 5: Solve for x
    x = 341,015,485,464.27/660,576.67
  6. Step 6: Final answer
    x = 516,239.07

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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.