Home / 818,111.10-1,227,166.65-257,145.60

Finding the Fourth Proportional to 818,111.10, 1,227,166.65 and 257,145.60

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Solution

The fourth proportional to 818,111.10, 1,227,166.65 and 257,145.60 is: 385,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,111.10 : 1,227,166.65 = 257,145.60 : x
  2. Step 2: Convert to fraction form
    818,111.10/1,227,166.65 = 257,145.60/x
  3. Step 3: Cross multiply
    818,111.10x = 1,227,166.65 × 257,145.60
  4. Step 4: Simplify right side
    818,111.10x = 315,560,504,514.24
  5. Step 5: Solve for x
    x = 315,560,504,514.24/818,111.10
  6. Step 6: Final answer
    x = 385,718.40

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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.