Home / 831,408.90-1,247,480.55-404,708.10

Finding the Fourth Proportional to 831,408.90, 1,247,480.55 and 404,708.10

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Solution

The fourth proportional to 831,408.90, 1,247,480.55 and 404,708.10 is: 607,240.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,408.90 : 1,247,480.55 = 404,708.10 : x
  2. Step 2: Convert to fraction form
    831,408.90/1,247,480.55 = 404,708.10/x
  3. Step 3: Cross multiply
    831,408.90x = 1,247,480.55 × 404,708.10
  4. Step 4: Simplify right side
    831,408.90x = 504,865,483,177.46
  5. Step 5: Solve for x
    x = 504,865,483,177.46/831,408.90
  6. Step 6: Final answer
    x = 607,240.89

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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.