Home / 686,723.60-1,030,085.40-287,231.60

Finding the Fourth Proportional to 686,723.60, 1,030,085.40 and 287,231.60

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Solution

The fourth proportional to 686,723.60, 1,030,085.40 and 287,231.60 is: 430,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,723.60 : 1,030,085.40 = 287,231.60 : x
  2. Step 2: Convert to fraction form
    686,723.60/1,030,085.40 = 287,231.60/x
  3. Step 3: Cross multiply
    686,723.60x = 1,030,085.40 × 287,231.60
  4. Step 4: Simplify right side
    686,723.60x = 295,873,077,578.64
  5. Step 5: Solve for x
    x = 295,873,077,578.64/686,723.60
  6. Step 6: Final answer
    x = 430,847.40

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Similar ratio
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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.