Home / 831,868.51-1,147,979.31-449,895.30

Finding the Fourth Proportional to 831,868.51, 1,147,979.31 and 449,895.30

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Solution

The fourth proportional to 831,868.51, 1,147,979.31 and 449,895.30 is: 620,855.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,868.51 : 1,147,979.31 = 449,895.30 : x
  2. Step 2: Convert to fraction form
    831,868.51/1,147,979.31 = 449,895.30/x
  3. Step 3: Cross multiply
    831,868.51x = 1,147,979.31 × 449,895.30
  4. Step 4: Simplify right side
    831,868.51x = 516,470,496,066.24
  5. Step 5: Solve for x
    x = 516,470,496,066.24/831,868.51
  6. Step 6: Final answer
    x = 620,855.93

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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.