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Finding the Fourth Proportional to 667,064.40, 920,539.68 and 365,258.40

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Solution

The fourth proportional to 667,064.40, 920,539.68 and 365,258.40 is: 504,051.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,064.40 : 920,539.68 = 365,258.40 : x
  2. Step 2: Convert to fraction form
    667,064.40/920,539.68 = 365,258.40/x
  3. Step 3: Cross multiply
    667,064.40x = 920,539.68 × 365,258.40
  4. Step 4: Simplify right side
    667,064.40x = 336,234,850,653.31
  5. Step 5: Solve for x
    x = 336,234,850,653.31/667,064.40
  6. Step 6: Final answer
    x = 504,051.56

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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.