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Finding the Fourth Proportional to 494,955.78, 683,038.62 and 280,091.94

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Solution

The fourth proportional to 494,955.78, 683,038.62 and 280,091.94 is: 386,526.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,955.78 : 683,038.62 = 280,091.94 : x
  2. Step 2: Convert to fraction form
    494,955.78/683,038.62 = 280,091.94/x
  3. Step 3: Cross multiply
    494,955.78x = 683,038.62 × 280,091.94
  4. Step 4: Simplify right side
    494,955.78x = 191,313,612,170.72
  5. Step 5: Solve for x
    x = 191,313,612,170.72/494,955.78
  6. Step 6: Final answer
    x = 386,526.68

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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.