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Finding the Fourth Proportional to 553,668.96, 764,062.88 and 299,020.16

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Solution

The fourth proportional to 553,668.96, 764,062.88 and 299,020.16 is: 412,647.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,668.96 : 764,062.88 = 299,020.16 : x
  2. Step 2: Convert to fraction form
    553,668.96/764,062.88 = 299,020.16/x
  3. Step 3: Cross multiply
    553,668.96x = 764,062.88 × 299,020.16
  4. Step 4: Simplify right side
    553,668.96x = 228,470,204,627.66
  5. Step 5: Solve for x
    x = 228,470,204,627.66/553,668.96
  6. Step 6: Final answer
    x = 412,647.67

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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.