Home / 686,762.84-1,030,291.90-231,399.34

Finding the Fourth Proportional to 686,762.84, 1,030,291.90 and 231,399.34

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Solution

The fourth proportional to 686,762.84, 1,030,291.90 and 231,399.34 is: 347,148.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,762.84 : 1,030,291.90 = 231,399.34 : x
  2. Step 2: Convert to fraction form
    686,762.84/1,030,291.90 = 231,399.34/x
  3. Step 3: Cross multiply
    686,762.84x = 1,030,291.90 × 231,399.34
  4. Step 4: Simplify right side
    686,762.84x = 238,408,865,667.35
  5. Step 5: Solve for x
    x = 238,408,865,667.35/686,762.84
  6. Step 6: Final answer
    x = 347,148.76

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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.