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Finding the Fourth Proportional to 553,613.75, 763,986.98 and 298,964.94

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Solution

The fourth proportional to 553,613.75, 763,986.98 and 298,964.94 is: 412,571.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,613.75 : 763,986.98 = 298,964.94 : x
  2. Step 2: Convert to fraction form
    553,613.75/763,986.98 = 298,964.94/x
  3. Step 3: Cross multiply
    553,613.75x = 763,986.98 × 298,964.94
  4. Step 4: Simplify right side
    553,613.75x = 228,405,322,383.89
  5. Step 5: Solve for x
    x = 228,405,322,383.89/553,613.75
  6. Step 6: Final answer
    x = 412,571.62

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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.