Home / 500,748.21-690,655.82-347,786.60

Finding the Fourth Proportional to 500,748.21, 690,655.82 and 347,786.60

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Solution

The fourth proportional to 500,748.21, 690,655.82 and 347,786.60 is: 479,683.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,748.21 : 690,655.82 = 347,786.60 : x
  2. Step 2: Convert to fraction form
    500,748.21/690,655.82 = 347,786.60/x
  3. Step 3: Cross multiply
    500,748.21x = 690,655.82 × 347,786.60
  4. Step 4: Simplify right side
    500,748.21x = 240,200,834,215.80
  5. Step 5: Solve for x
    x = 240,200,834,215.80/500,748.21
  6. Step 6: Final answer
    x = 479,683.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.