Home / 831,869.51-1,147,980.69-449,896.30

Finding the Fourth Proportional to 831,869.51, 1,147,980.69 and 449,896.30

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Solution

The fourth proportional to 831,869.51, 1,147,980.69 and 449,896.30 is: 620,857.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,869.51 : 1,147,980.69 = 449,896.30 : x
  2. Step 2: Convert to fraction form
    831,869.51/1,147,980.69 = 449,896.30/x
  3. Step 3: Cross multiply
    831,869.51x = 1,147,980.69 × 449,896.30
  4. Step 4: Simplify right side
    831,869.51x = 516,472,264,902.45
  5. Step 5: Solve for x
    x = 516,472,264,902.45/831,869.51
  6. Step 6: Final answer
    x = 620,857.31

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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.