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Finding the Fourth Proportional to 660,209.48, 911,110.92 and 373,723.64

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Solution

The fourth proportional to 660,209.48, 911,110.92 and 373,723.64 is: 515,750.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,209.48 : 911,110.92 = 373,723.64 : x
  2. Step 2: Convert to fraction form
    660,209.48/911,110.92 = 373,723.64/x
  3. Step 3: Cross multiply
    660,209.48x = 911,110.92 × 373,723.64
  4. Step 4: Simplify right side
    660,209.48x = 340,503,689,466.15
  5. Step 5: Solve for x
    x = 340,503,689,466.15/660,209.48
  6. Step 6: Final answer
    x = 515,750.98

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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.