Home / 1,391,096.10-2,086,941.70-431,530.88

Finding the Fourth Proportional to 1,391,096.10, 2,086,941.70 and 431,530.88

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Solution

The fourth proportional to 1,391,096.10, 2,086,941.70 and 431,530.88 is: 647,388.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,096.10 : 2,086,941.70 = 431,530.88 : x
  2. Step 2: Convert to fraction form
    1,391,096.10/2,086,941.70 = 431,530.88/x
  3. Step 3: Cross multiply
    1,391,096.10x = 2,086,941.70 × 431,530.88
  4. Step 4: Simplify right side
    1,391,096.10x = 900,579,788,309.70
  5. Step 5: Solve for x
    x = 900,579,788,309.70/1,391,096.10
  6. Step 6: Final answer
    x = 647,388.62

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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.