Home / 1,109,618.67-1,531,186.54-679,840.36

Finding the Fourth Proportional to 1,109,618.67, 1,531,186.54 and 679,840.36

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Solution

The fourth proportional to 1,109,618.67, 1,531,186.54 and 679,840.36 is: 938,126.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,618.67 : 1,531,186.54 = 679,840.36 : x
  2. Step 2: Convert to fraction form
    1,109,618.67/1,531,186.54 = 679,840.36/x
  3. Step 3: Cross multiply
    1,109,618.67x = 1,531,186.54 × 679,840.36
  4. Step 4: Simplify right side
    1,109,618.67x = 1,040,962,408,580.75
  5. Step 5: Solve for x
    x = 1,040,962,408,580.75/1,109,618.67
  6. Step 6: Final answer
    x = 938,126.26

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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.