Home / 638,741.12-957,834.72-339,156.80

Finding the Fourth Proportional to 638,741.12, 957,834.72 and 339,156.80

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Solution

The fourth proportional to 638,741.12, 957,834.72 and 339,156.80 is: 508,588.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,741.12 : 957,834.72 = 339,156.80 : x
  2. Step 2: Convert to fraction form
    638,741.12/957,834.72 = 339,156.80/x
  3. Step 3: Cross multiply
    638,741.12x = 957,834.72 × 339,156.80
  4. Step 4: Simplify right side
    638,741.12x = 324,856,158,564.10
  5. Step 5: Solve for x
    x = 324,856,158,564.10/638,741.12
  6. Step 6: Final answer
    x = 508,588.14

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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.