Home / 432,938.70-649,408.05-412,271.55

Finding the Fourth Proportional to 432,938.70, 649,408.05 and 412,271.55

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Solution

The fourth proportional to 432,938.70, 649,408.05 and 412,271.55 is: 618,407.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,938.70 : 649,408.05 = 412,271.55 : x
  2. Step 2: Convert to fraction form
    432,938.70/649,408.05 = 412,271.55/x
  3. Step 3: Cross multiply
    432,938.70x = 649,408.05 × 412,271.55
  4. Step 4: Simplify right side
    432,938.70x = 267,732,463,355.98
  5. Step 5: Solve for x
    x = 267,732,463,355.98/432,938.70
  6. Step 6: Final answer
    x = 618,407.33

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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.