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Finding the Fourth Proportional to 666,846.85, 999,536.42 and 329,387.89

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Solution

The fourth proportional to 666,846.85, 999,536.42 and 329,387.89 is: 493,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,846.85 : 999,536.42 = 329,387.89 : x
  2. Step 2: Convert to fraction form
    666,846.85/999,536.42 = 329,387.89/x
  3. Step 3: Cross multiply
    666,846.85x = 999,536.42 × 329,387.89
  4. Step 4: Simplify right side
    666,846.85x = 329,235,190,715.01
  5. Step 5: Solve for x
    x = 329,235,190,715.01/666,846.85
  6. Step 6: Final answer
    x = 493,719.35

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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.