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Finding the Fourth Proportional to 659,399.40, 989,244.90 and 304,327.80

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Solution

The fourth proportional to 659,399.40, 989,244.90 and 304,327.80 is: 456,558.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,399.40 : 989,244.90 = 304,327.80 : x
  2. Step 2: Convert to fraction form
    659,399.40/989,244.90 = 304,327.80/x
  3. Step 3: Cross multiply
    659,399.40x = 989,244.90 × 304,327.80
  4. Step 4: Simplify right side
    659,399.40x = 301,054,724,078.22
  5. Step 5: Solve for x
    x = 301,054,724,078.22/659,399.40
  6. Step 6: Final answer
    x = 456,558.99

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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.