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Finding the Fourth Proportional to 665,760.56, 918,749.58 and 363,954.56

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Solution

The fourth proportional to 665,760.56, 918,749.58 and 363,954.56 is: 502,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,760.56 : 918,749.58 = 363,954.56 : x
  2. Step 2: Convert to fraction form
    665,760.56/918,749.58 = 363,954.56/x
  3. Step 3: Cross multiply
    665,760.56x = 918,749.58 × 363,954.56
  4. Step 4: Simplify right side
    665,760.56x = 334,383,099,139.09
  5. Step 5: Solve for x
    x = 334,383,099,139.09/665,760.56
  6. Step 6: Final answer
    x = 502,257.30

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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.