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Finding the Fourth Proportional to 667,030.49, 920,500.93 and 361,106.75

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Solution

The fourth proportional to 667,030.49, 920,500.93 and 361,106.75 is: 498,326.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,030.49 : 920,500.93 = 361,106.75 : x
  2. Step 2: Convert to fraction form
    667,030.49/920,500.93 = 361,106.75/x
  3. Step 3: Cross multiply
    667,030.49x = 920,500.93 × 361,106.75
  4. Step 4: Simplify right side
    667,030.49x = 332,399,099,204.28
  5. Step 5: Solve for x
    x = 332,399,099,204.28/667,030.49
  6. Step 6: Final answer
    x = 498,326.69

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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.