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Finding the Fourth Proportional to 667,081.58, 920,580.01 and 361,164.63

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Solution

The fourth proportional to 667,081.58, 920,580.01 and 361,164.63 is: 498,411.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,081.58 : 920,580.01 = 361,164.63 : x
  2. Step 2: Convert to fraction form
    667,081.58/920,580.01 = 361,164.63/x
  3. Step 3: Cross multiply
    667,081.58x = 920,580.01 × 361,164.63
  4. Step 4: Simplify right side
    667,081.58x = 332,480,941,551.77
  5. Step 5: Solve for x
    x = 332,480,941,551.77/667,081.58
  6. Step 6: Final answer
    x = 498,411.21

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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.