Home / 679,136.80-1,017,961.20-341,639.20

Finding the Fourth Proportional to 679,136.80, 1,017,961.20 and 341,639.20

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Solution

The fourth proportional to 679,136.80, 1,017,961.20 and 341,639.20 is: 512,084.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,136.80 : 1,017,961.20 = 341,639.20 : x
  2. Step 2: Convert to fraction form
    679,136.80/1,017,961.20 = 341,639.20/x
  3. Step 3: Cross multiply
    679,136.80x = 1,017,961.20 × 341,639.20
  4. Step 4: Simplify right side
    679,136.80x = 347,775,449,999.04
  5. Step 5: Solve for x
    x = 347,775,449,999.04/679,136.80
  6. Step 6: Final answer
    x = 512,084.53

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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.