Home / 1,189,131.40-1,638,308.01-1,132,444.36

Finding the Fourth Proportional to 1,189,131.40, 1,638,308.01 and 1,132,444.36

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Solution

The fourth proportional to 1,189,131.40, 1,638,308.01 and 1,132,444.36 is: 1,560,208.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,131.40 : 1,638,308.01 = 1,132,444.36 : x
  2. Step 2: Convert to fraction form
    1,189,131.40/1,638,308.01 = 1,132,444.36/x
  3. Step 3: Cross multiply
    1,189,131.40x = 1,638,308.01 × 1,132,444.36
  4. Step 4: Simplify right side
    1,189,131.40x = 1,855,292,652,013.56
  5. Step 5: Solve for x
    x = 1,855,292,652,013.56/1,189,131.40
  6. Step 6: Final answer
    x = 1,560,208.28

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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.