Home / 1,389,090.68-2,082,215.16-939,858.98

Finding the Fourth Proportional to 1,389,090.68, 2,082,215.16 and 939,858.98

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Solution

The fourth proportional to 1,389,090.68, 2,082,215.16 and 939,858.98 is: 1,408,827.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,090.68 : 2,082,215.16 = 939,858.98 : x
  2. Step 2: Convert to fraction form
    1,389,090.68/2,082,215.16 = 939,858.98/x
  3. Step 3: Cross multiply
    1,389,090.68x = 2,082,215.16 × 939,858.98
  4. Step 4: Simplify right side
    1,389,090.68x = 1,956,988,616,418.14
  5. Step 5: Solve for x
    x = 1,956,988,616,418.14/1,389,090.68
  6. Step 6: Final answer
    x = 1,408,827.12

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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.