Home / 572,072.88-789,408.38-339,459.72

Finding the Fourth Proportional to 572,072.88, 789,408.38 and 339,459.72

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Solution

The fourth proportional to 572,072.88, 789,408.38 and 339,459.72 is: 468,423.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,072.88 : 789,408.38 = 339,459.72 : x
  2. Step 2: Convert to fraction form
    572,072.88/789,408.38 = 339,459.72/x
  3. Step 3: Cross multiply
    572,072.88x = 789,408.38 × 339,459.72
  4. Step 4: Simplify right side
    572,072.88x = 267,972,347,749.03
  5. Step 5: Solve for x
    x = 267,972,347,749.03/572,072.88
  6. Step 6: Final answer
    x = 468,423.44

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Half scale
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Double scale
Find fourth proportional to 572,073.88, 789,409.76 and 339,460.72
Similar ratio
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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.