Home / 781,623.03-1,171,631.84-443,942.72

Finding the Fourth Proportional to 781,623.03, 1,171,631.84 and 443,942.72

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Solution

The fourth proportional to 781,623.03, 1,171,631.84 and 443,942.72 is: 665,458.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,623.03 : 1,171,631.84 = 443,942.72 : x
  2. Step 2: Convert to fraction form
    781,623.03/1,171,631.84 = 443,942.72/x
  3. Step 3: Cross multiply
    781,623.03x = 1,171,631.84 × 443,942.72
  4. Step 4: Simplify right side
    781,623.03x = 520,137,421,139.90
  5. Step 5: Solve for x
    x = 520,137,421,139.90/781,623.03
  6. Step 6: Final answer
    x = 665,458.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.