Home / 1,679,728.68-2,318,039.16-915,787.80

Finding the Fourth Proportional to 1,679,728.68, 2,318,039.16 and 915,787.80

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Solution

The fourth proportional to 1,679,728.68, 2,318,039.16 and 915,787.80 is: 1,263,794.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679,728.68 : 2,318,039.16 = 915,787.80 : x
  2. Step 2: Convert to fraction form
    1,679,728.68/2,318,039.16 = 915,787.80/x
  3. Step 3: Cross multiply
    1,679,728.68x = 2,318,039.16 × 915,787.80
  4. Step 4: Simplify right side
    1,679,728.68x = 2,122,831,982,650.25
  5. Step 5: Solve for x
    x = 2,122,831,982,650.25/1,679,728.68
  6. Step 6: Final answer
    x = 1,263,794.57

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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.