Home / 930,915.20-1,396,372.80-458,523.20

Finding the Fourth Proportional to 930,915.20, 1,396,372.80 and 458,523.20

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Solution

The fourth proportional to 930,915.20, 1,396,372.80 and 458,523.20 is: 687,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    930,915.20 : 1,396,372.80 = 458,523.20 : x
  2. Step 2: Convert to fraction form
    930,915.20/1,396,372.80 = 458,523.20/x
  3. Step 3: Cross multiply
    930,915.20x = 1,396,372.80 × 458,523.20
  4. Step 4: Simplify right side
    930,915.20x = 640,269,324,648.96
  5. Step 5: Solve for x
    x = 640,269,324,648.96/930,915.20
  6. Step 6: Final answer
    x = 687,784.80

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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.