Home / 991,431.92-1,368,173.48-538,722.96

Finding the Fourth Proportional to 991,431.92, 1,368,173.48 and 538,722.96

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Solution

The fourth proportional to 991,431.92, 1,368,173.48 and 538,722.96 is: 743,436.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,431.92 : 1,368,173.48 = 538,722.96 : x
  2. Step 2: Convert to fraction form
    991,431.92/1,368,173.48 = 538,722.96/x
  3. Step 3: Cross multiply
    991,431.92x = 1,368,173.48 × 538,722.96
  4. Step 4: Simplify right side
    991,431.92x = 737,066,466,939.10
  5. Step 5: Solve for x
    x = 737,066,466,939.10/991,431.92
  6. Step 6: Final answer
    x = 743,436.29

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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.