Home / 1,218,954.37-1,821,018.88-788,987.41

Finding the Fourth Proportional to 1,218,954.37, 1,821,018.88 and 788,987.41

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Solution

The fourth proportional to 1,218,954.37, 1,821,018.88 and 788,987.41 is: 1,178,683.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,954.37 : 1,821,018.88 = 788,987.41 : x
  2. Step 2: Convert to fraction form
    1,218,954.37/1,821,018.88 = 788,987.41/x
  3. Step 3: Cross multiply
    1,218,954.37x = 1,821,018.88 × 788,987.41
  4. Step 4: Simplify right side
    1,218,954.37x = 1,436,760,969,692.30
  5. Step 5: Solve for x
    x = 1,436,760,969,692.30/1,218,954.37
  6. Step 6: Final answer
    x = 1,178,683.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.