Home / 494,280.16-682,136.03-279,440.21

Finding the Fourth Proportional to 494,280.16, 682,136.03 and 279,440.21

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Solution

The fourth proportional to 494,280.16, 682,136.03 and 279,440.21 is: 385,644.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,280.16 : 682,136.03 = 279,440.21 : x
  2. Step 2: Convert to fraction form
    494,280.16/682,136.03 = 279,440.21/x
  3. Step 3: Cross multiply
    494,280.16x = 682,136.03 × 279,440.21
  4. Step 4: Simplify right side
    494,280.16x = 190,616,237,875.71
  5. Step 5: Solve for x
    x = 190,616,237,875.71/494,280.16
  6. Step 6: Final answer
    x = 385,644.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.