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Finding the Fourth Proportional to 610,611.89, 842,610 and 338,660.27

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Solution

The fourth proportional to 610,611.89, 842,610 and 338,660.27 is: 467,332.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,611.89 : 842,610 = 338,660.27 : x
  2. Step 2: Convert to fraction form
    610,611.89/842,610 = 338,660.27/x
  3. Step 3: Cross multiply
    610,611.89x = 842,610 × 338,660.27
  4. Step 4: Simplify right side
    610,611.89x = 285,358,530,104.70
  5. Step 5: Solve for x
    x = 285,358,530,104.70/610,611.89
  6. Step 6: Final answer
    x = 467,332.09

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Double scale
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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.