Home / 665,911.79-998,557.16-345,977.66

Finding the Fourth Proportional to 665,911.79, 998,557.16 and 345,977.66

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Solution

The fourth proportional to 665,911.79, 998,557.16 and 345,977.66 is: 518,805.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,911.79 : 998,557.16 = 345,977.66 : x
  2. Step 2: Convert to fraction form
    665,911.79/998,557.16 = 345,977.66/x
  3. Step 3: Cross multiply
    665,911.79x = 998,557.16 × 345,977.66
  4. Step 4: Simplify right side
    665,911.79x = 345,478,469,593.05
  5. Step 5: Solve for x
    x = 345,478,469,593.05/665,911.79
  6. Step 6: Final answer
    x = 518,805.16

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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.