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Finding the Fourth Proportional to 610,679.63, 842,751.40 and 338,738.67

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Solution

The fourth proportional to 610,679.63, 842,751.40 and 338,738.67 is: 467,466.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,679.63 : 842,751.40 = 338,738.67 : x
  2. Step 2: Convert to fraction form
    610,679.63/842,751.40 = 338,738.67/x
  3. Step 3: Cross multiply
    610,679.63x = 842,751.40 × 338,738.67
  4. Step 4: Simplify right side
    610,679.63x = 285,472,488,376.64
  5. Step 5: Solve for x
    x = 285,472,488,376.64/610,679.63
  6. Step 6: Final answer
    x = 467,466.86

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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.