Home / 693,619.80-1,040,528.80-213,888.12

Finding the Fourth Proportional to 693,619.80, 1,040,528.80 and 213,888.12

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Solution

The fourth proportional to 693,619.80, 1,040,528.80 and 213,888.12 is: 320,862.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,619.80 : 1,040,528.80 = 213,888.12 : x
  2. Step 2: Convert to fraction form
    693,619.80/1,040,528.80 = 213,888.12/x
  3. Step 3: Cross multiply
    693,619.80x = 1,040,528.80 × 213,888.12
  4. Step 4: Simplify right side
    693,619.80x = 222,556,748,837.86
  5. Step 5: Solve for x
    x = 222,556,748,837.86/693,619.80
  6. Step 6: Final answer
    x = 320,862.74

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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.