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Finding the Fourth Proportional to 666,530, 919,811.44 and 364,724

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Solution

The fourth proportional to 666,530, 919,811.44 and 364,724 is: 503,319.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,530 : 919,811.44 = 364,724 : x
  2. Step 2: Convert to fraction form
    666,530/919,811.44 = 364,724/x
  3. Step 3: Cross multiply
    666,530x = 919,811.44 × 364,724
  4. Step 4: Simplify right side
    666,530x = 335,477,307,642.56
  5. Step 5: Solve for x
    x = 335,477,307,642.56/666,530
  6. Step 6: Final answer
    x = 503,319.14

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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.