Home / 443,629.23-665,788.92-309,639.03

Finding the Fourth Proportional to 443,629.23, 665,788.92 and 309,639.03

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Solution

The fourth proportional to 443,629.23, 665,788.92 and 309,639.03 is: 464,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,629.23 : 665,788.92 = 309,639.03 : x
  2. Step 2: Convert to fraction form
    443,629.23/665,788.92 = 309,639.03/x
  3. Step 3: Cross multiply
    443,629.23x = 665,788.92 × 309,639.03
  4. Step 4: Simplify right side
    443,629.23x = 206,154,235,373.55
  5. Step 5: Solve for x
    x = 206,154,235,373.55/443,629.23
  6. Step 6: Final answer
    x = 464,699.40

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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.