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Finding the Fourth Proportional to 610,613.92, 842,612.85 and 338,662.29

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Solution

The fourth proportional to 610,613.92, 842,612.85 and 338,662.29 is: 467,334.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,613.92 : 842,612.85 = 338,662.29 : x
  2. Step 2: Convert to fraction form
    610,613.92/842,612.85 = 338,662.29/x
  3. Step 3: Cross multiply
    610,613.92x = 842,612.85 × 338,662.29
  4. Step 4: Simplify right side
    610,613.92x = 285,361,197,364.43
  5. Step 5: Solve for x
    x = 285,361,197,364.43/610,613.92
  6. Step 6: Final answer
    x = 467,334.90

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Double scale
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Similar ratio
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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.