Home / 858,944.40-1,288,416.60-780,147.60

Finding the Fourth Proportional to 858,944.40, 1,288,416.60 and 780,147.60

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Solution

The fourth proportional to 858,944.40, 1,288,416.60 and 780,147.60 is: 1,170,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,944.40 : 1,288,416.60 = 780,147.60 : x
  2. Step 2: Convert to fraction form
    858,944.40/1,288,416.60 = 780,147.60/x
  3. Step 3: Cross multiply
    858,944.40x = 1,288,416.60 × 780,147.60
  4. Step 4: Simplify right side
    858,944.40x = 1,005,155,118,290.16
  5. Step 5: Solve for x
    x = 1,005,155,118,290.16/858,944.40
  6. Step 6: Final answer
    x = 1,170,221.40

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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.