Home / 1,389,209.09-2,084,061.50-491,172.22

Finding the Fourth Proportional to 1,389,209.09, 2,084,061.50 and 491,172.22

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Solution

The fourth proportional to 1,389,209.09, 2,084,061.50 and 491,172.22 is: 736,845.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,209.09 : 2,084,061.50 = 491,172.22 : x
  2. Step 2: Convert to fraction form
    1,389,209.09/2,084,061.50 = 491,172.22/x
  3. Step 3: Cross multiply
    1,389,209.09x = 2,084,061.50 × 491,172.22
  4. Step 4: Simplify right side
    1,389,209.09x = 1,023,633,113,571.53
  5. Step 5: Solve for x
    x = 1,023,633,113,571.53/1,389,209.09
  6. Step 6: Final answer
    x = 736,845.97

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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.