Home / 816,986.40-1,224,732.48-343,705.12

Finding the Fourth Proportional to 816,986.40, 1,224,732.48 and 343,705.12

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Solution

The fourth proportional to 816,986.40, 1,224,732.48 and 343,705.12 is: 515,243.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,986.40 : 1,224,732.48 = 343,705.12 : x
  2. Step 2: Convert to fraction form
    816,986.40/1,224,732.48 = 343,705.12/x
  3. Step 3: Cross multiply
    816,986.40x = 1,224,732.48 × 343,705.12
  4. Step 4: Simplify right side
    816,986.40x = 420,946,824,006.30
  5. Step 5: Solve for x
    x = 420,946,824,006.30/816,986.40
  6. Step 6: Final answer
    x = 515,243.37

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1.5x scale

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.