Home / 831,121.80-1,243,572.30-551,185.80

Finding the Fourth Proportional to 831,121.80, 1,243,572.30 and 551,185.80

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Solution

The fourth proportional to 831,121.80, 1,243,572.30 and 551,185.80 is: 824,715.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,121.80 : 1,243,572.30 = 551,185.80 : x
  2. Step 2: Convert to fraction form
    831,121.80/1,243,572.30 = 551,185.80/x
  3. Step 3: Cross multiply
    831,121.80x = 1,243,572.30 × 551,185.80
  4. Step 4: Simplify right side
    831,121.80x = 685,439,393,033.34
  5. Step 5: Solve for x
    x = 685,439,393,033.34/831,121.80
  6. Step 6: Final answer
    x = 824,715.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.