Home / 679,980.24-1,019,970-323,915.04

Finding the Fourth Proportional to 679,980.24, 1,019,970 and 323,915.04

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Solution

The fourth proportional to 679,980.24, 1,019,970 and 323,915.04 is: 485,872.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,980.24 : 1,019,970 = 323,915.04 : x
  2. Step 2: Convert to fraction form
    679,980.24/1,019,970 = 323,915.04/x
  3. Step 3: Cross multiply
    679,980.24x = 1,019,970 × 323,915.04
  4. Step 4: Simplify right side
    679,980.24x = 330,383,623,348.80
  5. Step 5: Solve for x
    x = 330,383,623,348.80/679,980.24
  6. Step 6: Final answer
    x = 485,872.39

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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.