Home / 1,296,189.54-1,788,242.67-811,911.60

Finding the Fourth Proportional to 1,296,189.54, 1,788,242.67 and 811,911.60

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Solution

The fourth proportional to 1,296,189.54, 1,788,242.67 and 811,911.60 is: 1,120,125.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,189.54 : 1,788,242.67 = 811,911.60 : x
  2. Step 2: Convert to fraction form
    1,296,189.54/1,788,242.67 = 811,911.60/x
  3. Step 3: Cross multiply
    1,296,189.54x = 1,788,242.67 × 811,911.60
  4. Step 4: Simplify right side
    1,296,189.54x = 1,451,894,967,387.97
  5. Step 5: Solve for x
    x = 1,451,894,967,387.97/1,296,189.54
  6. Step 6: Final answer
    x = 1,120,125.51

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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.