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Finding the Fourth Proportional to 659,689.44, 989,598.96 and 186,378.48

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Solution

The fourth proportional to 659,689.44, 989,598.96 and 186,378.48 is: 279,586.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,689.44 : 989,598.96 = 186,378.48 : x
  2. Step 2: Convert to fraction form
    659,689.44/989,598.96 = 186,378.48/x
  3. Step 3: Cross multiply
    659,689.44x = 989,598.96 × 186,378.48
  4. Step 4: Simplify right side
    659,689.44x = 184,439,949,974.38
  5. Step 5: Solve for x
    x = 184,439,949,974.38/659,689.44
  6. Step 6: Final answer
    x = 279,586.03

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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.