Home / 858,945.60-1,288,003.20-318,829.44

Finding the Fourth Proportional to 858,945.60, 1,288,003.20 and 318,829.44

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Solution

The fourth proportional to 858,945.60, 1,288,003.20 and 318,829.44 is: 478,090.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,945.60 : 1,288,003.20 = 318,829.44 : x
  2. Step 2: Convert to fraction form
    858,945.60/1,288,003.20 = 318,829.44/x
  3. Step 3: Cross multiply
    858,945.60x = 1,288,003.20 × 318,829.44
  4. Step 4: Simplify right side
    858,945.60x = 410,653,338,974.21
  5. Step 5: Solve for x
    x = 410,653,338,974.21/858,945.60
  6. Step 6: Final answer
    x = 478,090.04

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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.