Home / 449,042.72-619,678.95-306,052.56

Finding the Fourth Proportional to 449,042.72, 619,678.95 and 306,052.56

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Solution

The fourth proportional to 449,042.72, 619,678.95 and 306,052.56 is: 422,352.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,042.72 : 619,678.95 = 306,052.56 : x
  2. Step 2: Convert to fraction form
    449,042.72/619,678.95 = 306,052.56/x
  3. Step 3: Cross multiply
    449,042.72x = 619,678.95 × 306,052.56
  4. Step 4: Simplify right side
    449,042.72x = 189,654,329,025.61
  5. Step 5: Solve for x
    x = 189,654,329,025.61/449,042.72
  6. Step 6: Final answer
    x = 422,352.53

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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.