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Finding the Fourth Proportional to 664,013.10, 994,707.45 and 363,956.70

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Solution

The fourth proportional to 664,013.10, 994,707.45 and 363,956.70 is: 545,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,013.10 : 994,707.45 = 363,956.70 : x
  2. Step 2: Convert to fraction form
    664,013.10/994,707.45 = 363,956.70/x
  3. Step 3: Cross multiply
    664,013.10x = 994,707.45 × 363,956.70
  4. Step 4: Simplify right side
    664,013.10x = 362,030,440,967.42
  5. Step 5: Solve for x
    x = 362,030,440,967.42/664,013.10
  6. Step 6: Final answer
    x = 545,215.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.