Home / 628,845.40-942,404.10-403,514.20

Finding the Fourth Proportional to 628,845.40, 942,404.10 and 403,514.20

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Solution

The fourth proportional to 628,845.40, 942,404.10 and 403,514.20 is: 604,716.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,845.40 : 942,404.10 = 403,514.20 : x
  2. Step 2: Convert to fraction form
    628,845.40/942,404.10 = 403,514.20/x
  3. Step 3: Cross multiply
    628,845.40x = 942,404.10 × 403,514.20
  4. Step 4: Simplify right side
    628,845.40x = 380,273,436,488.22
  5. Step 5: Solve for x
    x = 380,273,436,488.22/628,845.40
  6. Step 6: Final answer
    x = 604,716.89

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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.