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Finding the Fourth Proportional to 10,640,512.80, 15,962,842.80 and 4,249,677.60

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Solution

The fourth proportional to 10,640,512.80, 15,962,842.80 and 4,249,677.60 is: 6,375,344.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640,512.80 : 15,962,842.80 = 4,249,677.60 : x
  2. Step 2: Convert to fraction form
    10,640,512.80/15,962,842.80 = 4,249,677.60/x
  3. Step 3: Cross multiply
    10,640,512.80x = 15,962,842.80 × 4,249,677.60
  4. Step 4: Simplify right side
    10,640,512.80x = 67,836,935,479,481.27
  5. Step 5: Solve for x
    x = 67,836,935,479,481.27/10,640,512.80
  6. Step 6: Final answer
    x = 6,375,344.57

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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.