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Finding the Fourth Proportional to 659,989.48, 989,825.62 and 304,662.20

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Solution

The fourth proportional to 659,989.48, 989,825.62 and 304,662.20 is: 456,920.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,989.48 : 989,825.62 = 304,662.20 : x
  2. Step 2: Convert to fraction form
    659,989.48/989,825.62 = 304,662.20/x
  3. Step 3: Cross multiply
    659,989.48x = 989,825.62 × 304,662.20
  4. Step 4: Simplify right side
    659,989.48x = 301,562,451,005.56
  5. Step 5: Solve for x
    x = 301,562,451,005.56/659,989.48
  6. Step 6: Final answer
    x = 456,920.09

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1.5x scale

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.