Home / 831,963.70-1,148,110-449,990.50

Finding the Fourth Proportional to 831,963.70, 1,148,110 and 449,990.50

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Solution

The fourth proportional to 831,963.70, 1,148,110 and 449,990.50 is: 620,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,963.70 : 1,148,110 = 449,990.50 : x
  2. Step 2: Convert to fraction form
    831,963.70/1,148,110 = 449,990.50/x
  3. Step 3: Cross multiply
    831,963.70x = 1,148,110 × 449,990.50
  4. Step 4: Simplify right side
    831,963.70x = 516,638,592,955
  5. Step 5: Solve for x
    x = 516,638,592,955/831,963.70
  6. Step 6: Final answer
    x = 620,986.94

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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.