Home / 1,115,220.67-1,538,954.36-631,775.95

Finding the Fourth Proportional to 1,115,220.67, 1,538,954.36 and 631,775.95

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Solution

The fourth proportional to 1,115,220.67, 1,538,954.36 and 631,775.95 is: 871,822.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,220.67 : 1,538,954.36 = 631,775.95 : x
  2. Step 2: Convert to fraction form
    1,115,220.67/1,538,954.36 = 631,775.95/x
  3. Step 3: Cross multiply
    1,115,220.67x = 1,538,954.36 × 631,775.95
  4. Step 4: Simplify right side
    1,115,220.67x = 972,274,352,795.64
  5. Step 5: Solve for x
    x = 972,274,352,795.64/1,115,220.67
  6. Step 6: Final answer
    x = 871,822.39

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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.