Home / 938,819.64-1,408,230.49-339,640.42

Finding the Fourth Proportional to 938,819.64, 1,408,230.49 and 339,640.42

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Solution

The fourth proportional to 938,819.64, 1,408,230.49 and 339,640.42 is: 509,461.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,819.64 : 1,408,230.49 = 339,640.42 : x
  2. Step 2: Convert to fraction form
    938,819.64/1,408,230.49 = 339,640.42/x
  3. Step 3: Cross multiply
    938,819.64x = 1,408,230.49 × 339,640.42
  4. Step 4: Simplify right side
    938,819.64x = 478,291,989,072.10
  5. Step 5: Solve for x
    x = 478,291,989,072.10/938,819.64
  6. Step 6: Final answer
    x = 509,461.00

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Double scale
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Similar ratio
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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.