Home / 642,211.31-886,213.53-351,764.94

Finding the Fourth Proportional to 642,211.31, 886,213.53 and 351,764.94

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Solution

The fourth proportional to 642,211.31, 886,213.53 and 351,764.94 is: 485,414.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,211.31 : 886,213.53 = 351,764.94 : x
  2. Step 2: Convert to fraction form
    642,211.31/886,213.53 = 351,764.94/x
  3. Step 3: Cross multiply
    642,211.31x = 886,213.53 × 351,764.94
  4. Step 4: Simplify right side
    642,211.31x = 311,738,849,207.64
  5. Step 5: Solve for x
    x = 311,738,849,207.64/642,211.31
  6. Step 6: Final answer
    x = 485,414.76

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1.5x scale

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.