Home / 748,110.40-1,122,311.40-321,645.40

Finding the Fourth Proportional to 748,110.40, 1,122,311.40 and 321,645.40

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Solution

The fourth proportional to 748,110.40, 1,122,311.40 and 321,645.40 is: 482,530.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,110.40 : 1,122,311.40 = 321,645.40 : x
  2. Step 2: Convert to fraction form
    748,110.40/1,122,311.40 = 321,645.40/x
  3. Step 3: Cross multiply
    748,110.40x = 1,122,311.40 × 321,645.40
  4. Step 4: Simplify right side
    748,110.40x = 360,986,299,177.56
  5. Step 5: Solve for x
    x = 360,986,299,177.56/748,110.40
  6. Step 6: Final answer
    x = 482,530.79

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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.