Home / 1,405,051.81-1,939,018.48-861,082.49

Finding the Fourth Proportional to 1,405,051.81, 1,939,018.48 and 861,082.49

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Solution

The fourth proportional to 1,405,051.81, 1,939,018.48 and 861,082.49 is: 1,188,322.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,051.81 : 1,939,018.48 = 861,082.49 : x
  2. Step 2: Convert to fraction form
    1,405,051.81/1,939,018.48 = 861,082.49/x
  3. Step 3: Cross multiply
    1,405,051.81x = 1,939,018.48 × 861,082.49
  4. Step 4: Simplify right side
    1,405,051.81x = 1,669,654,863,609.26
  5. Step 5: Solve for x
    x = 1,669,654,863,609.26/1,405,051.81
  6. Step 6: Final answer
    x = 1,188,322.63

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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.