Home / 858,770.40-1,288,155.60-620,824.80

Finding the Fourth Proportional to 858,770.40, 1,288,155.60 and 620,824.80

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Solution

The fourth proportional to 858,770.40, 1,288,155.60 and 620,824.80 is: 931,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,770.40 : 1,288,155.60 = 620,824.80 : x
  2. Step 2: Convert to fraction form
    858,770.40/1,288,155.60 = 620,824.80/x
  3. Step 3: Cross multiply
    858,770.40x = 1,288,155.60 × 620,824.80
  4. Step 4: Simplify right side
    858,770.40x = 799,718,942,738.88
  5. Step 5: Solve for x
    x = 799,718,942,738.88/858,770.40
  6. Step 6: Final answer
    x = 931,237.20

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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.