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Finding the Fourth Proportional to 663,090.95, 994,632.32 and 189,777.68

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Solution

The fourth proportional to 663,090.95, 994,632.32 and 189,777.68 is: 284,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,090.95 : 994,632.32 = 189,777.68 : x
  2. Step 2: Convert to fraction form
    663,090.95/994,632.32 = 189,777.68/x
  3. Step 3: Cross multiply
    663,090.95x = 994,632.32 × 189,777.68
  4. Step 4: Simplify right side
    663,090.95x = 188,759,009,643.90
  5. Step 5: Solve for x
    x = 188,759,009,643.90/663,090.95
  6. Step 6: Final answer
    x = 284,665.34

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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.