Home / 7,128,130.80-10,690,122.60-3,934,786.80

Finding the Fourth Proportional to 7,128,130.80, 10,690,122.60 and 3,934,786.80

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Solution

The fourth proportional to 7,128,130.80, 10,690,122.60 and 3,934,786.80 is: 5,901,035.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,130.80 : 10,690,122.60 = 3,934,786.80 : x
  2. Step 2: Convert to fraction form
    7,128,130.80/10,690,122.60 = 3,934,786.80/x
  3. Step 3: Cross multiply
    7,128,130.80x = 10,690,122.60 × 3,934,786.80
  4. Step 4: Simplify right side
    7,128,130.80x = 42,063,353,296,861.68
  5. Step 5: Solve for x
    x = 42,063,353,296,861.68/7,128,130.80
  6. Step 6: Final answer
    x = 5,901,035.56

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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.