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Finding the Fourth Proportional to 664,368.16, 996,902.16 and 290,653.60

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Solution

The fourth proportional to 664,368.16, 996,902.16 and 290,653.60 is: 436,133.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,368.16 : 996,902.16 = 290,653.60 : x
  2. Step 2: Convert to fraction form
    664,368.16/996,902.16 = 290,653.60/x
  3. Step 3: Cross multiply
    664,368.16x = 996,902.16 × 290,653.60
  4. Step 4: Simplify right side
    664,368.16x = 289,753,201,651.78
  5. Step 5: Solve for x
    x = 289,753,201,651.78/664,368.16
  6. Step 6: Final answer
    x = 436,133.49

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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.