Home / 991,431.56-1,368,183.76-538,722.56

Finding the Fourth Proportional to 991,431.56, 1,368,183.76 and 538,722.56

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Solution

The fourth proportional to 991,431.56, 1,368,183.76 and 538,722.56 is: 743,441.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,431.56 : 1,368,183.76 = 538,722.56 : x
  2. Step 2: Convert to fraction form
    991,431.56/1,368,183.76 = 538,722.56/x
  3. Step 3: Cross multiply
    991,431.56x = 1,368,183.76 × 538,722.56
  4. Step 4: Simplify right side
    991,431.56x = 737,071,459,811.28
  5. Step 5: Solve for x
    x = 737,071,459,811.28/991,431.56
  6. Step 6: Final answer
    x = 743,441.59

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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.