Home / 1,550,693.57-2,139,643.53-905,989.20

Finding the Fourth Proportional to 1,550,693.57, 2,139,643.53 and 905,989.20

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Solution

The fourth proportional to 1,550,693.57, 2,139,643.53 and 905,989.20 is: 1,250,081.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,550,693.57 : 2,139,643.53 = 905,989.20 : x
  2. Step 2: Convert to fraction form
    1,550,693.57/2,139,643.53 = 905,989.20/x
  3. Step 3: Cross multiply
    1,550,693.57x = 2,139,643.53 × 905,989.20
  4. Step 4: Simplify right side
    1,550,693.57x = 1,938,493,930,029.88
  5. Step 5: Solve for x
    x = 1,938,493,930,029.88/1,550,693.57
  6. Step 6: Final answer
    x = 1,250,081.88

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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.