Home / 856,561.68-1,286,019.48-436,120.08

Finding the Fourth Proportional to 856,561.68, 1,286,019.48 and 436,120.08

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Solution

The fourth proportional to 856,561.68, 1,286,019.48 and 436,120.08 is: 654,779.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,561.68 : 1,286,019.48 = 436,120.08 : x
  2. Step 2: Convert to fraction form
    856,561.68/1,286,019.48 = 436,120.08/x
  3. Step 3: Cross multiply
    856,561.68x = 1,286,019.48 × 436,120.08
  4. Step 4: Simplify right side
    856,561.68x = 560,858,918,499.16
  5. Step 5: Solve for x
    x = 560,858,918,499.16/856,561.68
  6. Step 6: Final answer
    x = 654,779.37

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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.