Home / 427,376.99-639,902.03-300,827.45

Finding the Fourth Proportional to 427,376.99, 639,902.03 and 300,827.45

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Solution

The fourth proportional to 427,376.99, 639,902.03 and 300,827.45 is: 450,422.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,376.99 : 639,902.03 = 300,827.45 : x
  2. Step 2: Convert to fraction form
    427,376.99/639,902.03 = 300,827.45/x
  3. Step 3: Cross multiply
    427,376.99x = 639,902.03 × 300,827.45
  4. Step 4: Simplify right side
    427,376.99x = 192,500,096,030.34
  5. Step 5: Solve for x
    x = 192,500,096,030.34/427,376.99
  6. Step 6: Final answer
    x = 450,422.23

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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.