Home / 679,136.30-1,017,960.45-341,638.70

Finding the Fourth Proportional to 679,136.30, 1,017,960.45 and 341,638.70

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Solution

The fourth proportional to 679,136.30, 1,017,960.45 and 341,638.70 is: 512,083.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,136.30 : 1,017,960.45 = 341,638.70 : x
  2. Step 2: Convert to fraction form
    679,136.30/1,017,960.45 = 341,638.70/x
  3. Step 3: Cross multiply
    679,136.30x = 1,017,960.45 × 341,638.70
  4. Step 4: Simplify right side
    679,136.30x = 347,774,684,789.42
  5. Step 5: Solve for x
    x = 347,774,684,789.42/679,136.30
  6. Step 6: Final answer
    x = 512,083.78

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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.