Home / 991,438.32-1,368,193.08-538,729.32

Finding the Fourth Proportional to 991,438.32, 1,368,193.08 and 538,729.32

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Solution

The fourth proportional to 991,438.32, 1,368,193.08 and 538,729.32 is: 743,450.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,438.32 : 1,368,193.08 = 538,729.32 : x
  2. Step 2: Convert to fraction form
    991,438.32/1,368,193.08 = 538,729.32/x
  3. Step 3: Cross multiply
    991,438.32x = 1,368,193.08 × 538,729.32
  4. Step 4: Simplify right side
    991,438.32x = 737,085,727,617.11
  5. Step 5: Solve for x
    x = 737,085,727,617.11/991,438.32
  6. Step 6: Final answer
    x = 743,450.92

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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.