Home / 7,128,910.20-10,692,053.10-4,428,402.60

Finding the Fourth Proportional to 7,128,910.20, 10,692,053.10 and 4,428,402.60

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Solution

The fourth proportional to 7,128,910.20, 10,692,053.10 and 4,428,402.60 is: 6,641,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,910.20 : 10,692,053.10 = 4,428,402.60 : x
  2. Step 2: Convert to fraction form
    7,128,910.20/10,692,053.10 = 4,428,402.60/x
  3. Step 3: Cross multiply
    7,128,910.20x = 10,692,053.10 × 4,428,402.60
  4. Step 4: Simplify right side
    7,128,910.20x = 47,348,715,747,378.05
  5. Step 5: Solve for x
    x = 47,348,715,747,378.05/7,128,910.20
  6. Step 6: Final answer
    x = 6,641,788.78

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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.