Home / 812,084.80-1,218,472.80-512,795.20

Finding the Fourth Proportional to 812,084.80, 1,218,472.80 and 512,795.20

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Solution

The fourth proportional to 812,084.80, 1,218,472.80 and 512,795.20 is: 769,411.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,084.80 : 1,218,472.80 = 512,795.20 : x
  2. Step 2: Convert to fraction form
    812,084.80/1,218,472.80 = 512,795.20/x
  3. Step 3: Cross multiply
    812,084.80x = 1,218,472.80 × 512,795.20
  4. Step 4: Simplify right side
    812,084.80x = 624,827,003,170.56
  5. Step 5: Solve for x
    x = 624,827,003,170.56/812,084.80
  6. Step 6: Final answer
    x = 769,411.03

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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.