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Finding the Fourth Proportional to 668,992.56, 1,003,911.89 and 349,720.64

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Solution

The fourth proportional to 668,992.56, 1,003,911.89 and 349,720.64 is: 524,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,992.56 : 1,003,911.89 = 349,720.64 : x
  2. Step 2: Convert to fraction form
    668,992.56/1,003,911.89 = 349,720.64/x
  3. Step 3: Cross multiply
    668,992.56x = 1,003,911.89 × 349,720.64
  4. Step 4: Simplify right side
    668,992.56x = 351,088,703,654.85
  5. Step 5: Solve for x
    x = 351,088,703,654.85/668,992.56
  6. Step 6: Final answer
    x = 524,802.10

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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.