Home / 721,544.28-1,082,328.84-215,987.64

Finding the Fourth Proportional to 721,544.28, 1,082,328.84 and 215,987.64

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Solution

The fourth proportional to 721,544.28, 1,082,328.84 and 215,987.64 is: 323,985.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,544.28 : 1,082,328.84 = 215,987.64 : x
  2. Step 2: Convert to fraction form
    721,544.28/1,082,328.84 = 215,987.64/x
  3. Step 3: Cross multiply
    721,544.28x = 1,082,328.84 × 215,987.64
  4. Step 4: Simplify right side
    721,544.28x = 233,769,651,855.54
  5. Step 5: Solve for x
    x = 233,769,651,855.54/721,544.28
  6. Step 6: Final answer
    x = 323,985.18

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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.