Home / 571,975.34-789,420.39-317,408.54

Finding the Fourth Proportional to 571,975.34, 789,420.39 and 317,408.54

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Solution

The fourth proportional to 571,975.34, 789,420.39 and 317,408.54 is: 438,076.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,975.34 : 789,420.39 = 317,408.54 : x
  2. Step 2: Convert to fraction form
    571,975.34/789,420.39 = 317,408.54/x
  3. Step 3: Cross multiply
    571,975.34x = 789,420.39 × 317,408.54
  4. Step 4: Simplify right side
    571,975.34x = 250,568,773,436.13
  5. Step 5: Solve for x
    x = 250,568,773,436.13/571,975.34
  6. Step 6: Final answer
    x = 438,076.18

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Double scale
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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.