Home / 3,128,892.12-4,317,904.54-1,921,668.12

Finding the Fourth Proportional to 3,128,892.12, 4,317,904.54 and 1,921,668.12

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Solution

The fourth proportional to 3,128,892.12, 4,317,904.54 and 1,921,668.12 is: 2,651,922.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,892.12 : 4,317,904.54 = 1,921,668.12 : x
  2. Step 2: Convert to fraction form
    3,128,892.12/4,317,904.54 = 1,921,668.12/x
  3. Step 3: Cross multiply
    3,128,892.12x = 4,317,904.54 × 1,921,668.12
  4. Step 4: Simplify right side
    3,128,892.12x = 8,297,579,499,721.27
  5. Step 5: Solve for x
    x = 8,297,579,499,721.27/3,128,892.12
  6. Step 6: Final answer
    x = 2,651,922.53

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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.