Home / 399,084.30-598,918.05-280,986.30

Finding the Fourth Proportional to 399,084.30, 598,918.05 and 280,986.30

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Solution

The fourth proportional to 399,084.30, 598,918.05 and 280,986.30 is: 421,684.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,084.30 : 598,918.05 = 280,986.30 : x
  2. Step 2: Convert to fraction form
    399,084.30/598,918.05 = 280,986.30/x
  3. Step 3: Cross multiply
    399,084.30x = 598,918.05 × 280,986.30
  4. Step 4: Simplify right side
    399,084.30x = 168,287,766,872.72
  5. Step 5: Solve for x
    x = 168,287,766,872.72/399,084.30
  6. Step 6: Final answer
    x = 421,684.76

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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.