Home / 831,829-1,147,927.48-449,855.78

Finding the Fourth Proportional to 831,829, 1,147,927.48 and 449,855.78

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Solution

The fourth proportional to 831,829, 1,147,927.48 and 449,855.78 is: 620,802.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,829 : 1,147,927.48 = 449,855.78 : x
  2. Step 2: Convert to fraction form
    831,829/1,147,927.48 = 449,855.78/x
  3. Step 3: Cross multiply
    831,829x = 1,147,927.48 × 449,855.78
  4. Step 4: Simplify right side
    831,829x = 516,401,811,898.83
  5. Step 5: Solve for x
    x = 516,401,811,898.83/831,829
  6. Step 6: Final answer
    x = 620,802.85

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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.