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Finding the Fourth Proportional to 655,777.08, 905,018.67 and 365,407.88

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Solution

The fourth proportional to 655,777.08, 905,018.67 and 365,407.88 is: 504,288.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,777.08 : 905,018.67 = 365,407.88 : x
  2. Step 2: Convert to fraction form
    655,777.08/905,018.67 = 365,407.88/x
  3. Step 3: Cross multiply
    655,777.08x = 905,018.67 × 365,407.88
  4. Step 4: Simplify right side
    655,777.08x = 330,700,949,040.03
  5. Step 5: Solve for x
    x = 330,700,949,040.03/655,777.08
  6. Step 6: Final answer
    x = 504,288.67

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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.