Home / 1,272,836.06-1,909,782.78-515,213.12

Finding the Fourth Proportional to 1,272,836.06, 1,909,782.78 and 515,213.12

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Solution

The fourth proportional to 1,272,836.06, 1,909,782.78 and 515,213.12 is: 773,033.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,836.06 : 1,909,782.78 = 515,213.12 : x
  2. Step 2: Convert to fraction form
    1,272,836.06/1,909,782.78 = 515,213.12/x
  3. Step 3: Cross multiply
    1,272,836.06x = 1,909,782.78 × 515,213.12
  4. Step 4: Simplify right side
    1,272,836.06x = 983,945,144,606.07
  5. Step 5: Solve for x
    x = 983,945,144,606.07/1,272,836.06
  6. Step 6: Final answer
    x = 773,033.68

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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.