Home / 635,748.60-953,136.90-320,431.80

Finding the Fourth Proportional to 635,748.60, 953,136.90 and 320,431.80

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Solution

The fourth proportional to 635,748.60, 953,136.90 and 320,431.80 is: 480,402.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,748.60 : 953,136.90 = 320,431.80 : x
  2. Step 2: Convert to fraction form
    635,748.60/953,136.90 = 320,431.80/x
  3. Step 3: Cross multiply
    635,748.60x = 953,136.90 × 320,431.80
  4. Step 4: Simplify right side
    635,748.60x = 305,415,372,513.42
  5. Step 5: Solve for x
    x = 305,415,372,513.42/635,748.60
  6. Step 6: Final answer
    x = 480,402.74

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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.