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Finding the Fourth Proportional to 660,584.90, 911,576.70 and 374,107.07

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Solution

The fourth proportional to 660,584.90, 911,576.70 and 374,107.07 is: 516,250.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,584.90 : 911,576.70 = 374,107.07 : x
  2. Step 2: Convert to fraction form
    660,584.90/911,576.70 = 374,107.07/x
  3. Step 3: Cross multiply
    660,584.90x = 911,576.70 × 374,107.07
  4. Step 4: Simplify right side
    660,584.90x = 341,027,288,317.27
  5. Step 5: Solve for x
    x = 341,027,288,317.27/660,584.90
  6. Step 6: Final answer
    x = 516,250.51

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1.5x scale

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.