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Finding the Fourth Proportional to 449,785.46, 620,713.89 and 245,849.84

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Solution

The fourth proportional to 449,785.46, 620,713.89 and 245,849.84 is: 339,278.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,785.46 : 620,713.89 = 245,849.84 : x
  2. Step 2: Convert to fraction form
    449,785.46/620,713.89 = 245,849.84/x
  3. Step 3: Cross multiply
    449,785.46x = 620,713.89 × 245,849.84
  4. Step 4: Simplify right side
    449,785.46x = 152,602,407,438.71
  5. Step 5: Solve for x
    x = 152,602,407,438.71/449,785.46
  6. Step 6: Final answer
    x = 339,278.21

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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.