Home / 1,102,311.88-1,521,091.22-643,466.28

Finding the Fourth Proportional to 1,102,311.88, 1,521,091.22 and 643,466.28

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Solution

The fourth proportional to 1,102,311.88, 1,521,091.22 and 643,466.28 is: 887,925.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,311.88 : 1,521,091.22 = 643,466.28 : x
  2. Step 2: Convert to fraction form
    1,102,311.88/1,521,091.22 = 643,466.28/x
  3. Step 3: Cross multiply
    1,102,311.88x = 1,521,091.22 × 643,466.28
  4. Step 4: Simplify right side
    1,102,311.88x = 978,770,908,874.06
  5. Step 5: Solve for x
    x = 978,770,908,874.06/1,102,311.88
  6. Step 6: Final answer
    x = 887,925.57

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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.