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Finding the Fourth Proportional to 498,548.55, 688,896.63 and 355,059.48

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Solution

The fourth proportional to 498,548.55, 688,896.63 and 355,059.48 is: 490,622.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,548.55 : 688,896.63 = 355,059.48 : x
  2. Step 2: Convert to fraction form
    498,548.55/688,896.63 = 355,059.48/x
  3. Step 3: Cross multiply
    498,548.55x = 688,896.63 × 355,059.48
  4. Step 4: Simplify right side
    498,548.55x = 244,599,279,221.55
  5. Step 5: Solve for x
    x = 244,599,279,221.55/498,548.55
  6. Step 6: Final answer
    x = 490,622.79

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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.