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Finding the Fourth Proportional to 610,798.39, 842,902.49 and 356,198.78

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Solution

The fourth proportional to 610,798.39, 842,902.49 and 356,198.78 is: 491,554.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,798.39 : 842,902.49 = 356,198.78 : x
  2. Step 2: Convert to fraction form
    610,798.39/842,902.49 = 356,198.78/x
  3. Step 3: Cross multiply
    610,798.39x = 842,902.49 × 356,198.78
  4. Step 4: Simplify right side
    610,798.39x = 300,240,838,596.96
  5. Step 5: Solve for x
    x = 300,240,838,596.96/610,798.39
  6. Step 6: Final answer
    x = 491,554.73

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1.5x scale

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.