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Finding the Fourth Proportional to 604,912.80, 907,369.20 and 273,136.80

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Solution

The fourth proportional to 604,912.80, 907,369.20 and 273,136.80 is: 409,705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,912.80 : 907,369.20 = 273,136.80 : x
  2. Step 2: Convert to fraction form
    604,912.80/907,369.20 = 273,136.80/x
  3. Step 3: Cross multiply
    604,912.80x = 907,369.20 × 273,136.80
  4. Step 4: Simplify right side
    604,912.80x = 247,835,919,706.56
  5. Step 5: Solve for x
    x = 247,835,919,706.56/604,912.80
  6. Step 6: Final answer
    x = 409,705.20

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Similar ratio
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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.