Home / 639,439.17-882,038.73-381,144

Finding the Fourth Proportional to 639,439.17, 882,038.73 and 381,144

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Solution

The fourth proportional to 639,439.17, 882,038.73 and 381,144 is: 525,747.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,439.17 : 882,038.73 = 381,144 : x
  2. Step 2: Convert to fraction form
    639,439.17/882,038.73 = 381,144/x
  3. Step 3: Cross multiply
    639,439.17x = 882,038.73 × 381,144
  4. Step 4: Simplify right side
    639,439.17x = 336,183,769,707.12
  5. Step 5: Solve for x
    x = 336,183,769,707.12/639,439.17
  6. Step 6: Final answer
    x = 525,747.85

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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.