Home / 831,872.02-1,147,984.14-449,898.78

Finding the Fourth Proportional to 831,872.02, 1,147,984.14 and 449,898.78

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Solution

The fourth proportional to 831,872.02, 1,147,984.14 and 449,898.78 is: 620,860.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,872.02 : 1,147,984.14 = 449,898.78 : x
  2. Step 2: Convert to fraction form
    831,872.02/1,147,984.14 = 449,898.78/x
  3. Step 3: Cross multiply
    831,872.02x = 1,147,984.14 × 449,898.78
  4. Step 4: Simplify right side
    831,872.02x = 516,476,664,045.35
  5. Step 5: Solve for x
    x = 516,476,664,045.35/831,872.02
  6. Step 6: Final answer
    x = 620,860.72

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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.