Home / 686,421.44-1,029,638.26-281,836.16

Finding the Fourth Proportional to 686,421.44, 1,029,638.26 and 281,836.16

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Solution

The fourth proportional to 686,421.44, 1,029,638.26 and 281,836.16 is: 422,756.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,421.44 : 1,029,638.26 = 281,836.16 : x
  2. Step 2: Convert to fraction form
    686,421.44/1,029,638.26 = 281,836.16/x
  3. Step 3: Cross multiply
    686,421.44x = 1,029,638.26 × 281,836.16
  4. Step 4: Simplify right side
    686,421.44x = 290,189,293,387.48
  5. Step 5: Solve for x
    x = 290,189,293,387.48/686,421.44
  6. Step 6: Final answer
    x = 422,756.74

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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.