Home / 571,966.40-789,408.12-317,399.60

Finding the Fourth Proportional to 571,966.40, 789,408.12 and 317,399.60

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Solution

The fourth proportional to 571,966.40, 789,408.12 and 317,399.60 is: 438,063.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,966.40 : 789,408.12 = 317,399.60 : x
  2. Step 2: Convert to fraction form
    571,966.40/789,408.12 = 317,399.60/x
  3. Step 3: Cross multiply
    571,966.40x = 789,408.12 × 317,399.60
  4. Step 4: Simplify right side
    571,966.40x = 250,557,821,524.75
  5. Step 5: Solve for x
    x = 250,557,821,524.75/571,966.40
  6. Step 6: Final answer
    x = 438,063.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.