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Finding the Fourth Proportional to 610,630.65, 842,771.21 and 338,786.15

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Solution

The fourth proportional to 610,630.65, 842,771.21 and 338,786.15 is: 467,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,630.65 : 842,771.21 = 338,786.15 : x
  2. Step 2: Convert to fraction form
    610,630.65/842,771.21 = 338,786.15/x
  3. Step 3: Cross multiply
    610,630.65x = 842,771.21 × 338,786.15
  4. Step 4: Simplify right side
    610,630.65x = 285,519,207,658.96
  5. Step 5: Solve for x
    x = 285,519,207,658.96/610,630.65
  6. Step 6: Final answer
    x = 467,580.87

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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.