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Finding the Fourth Proportional to 425,663.21, 638,494.82 and 404,378.24

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Solution

The fourth proportional to 425,663.21, 638,494.82 and 404,378.24 is: 606,567.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,663.21 : 638,494.82 = 404,378.24 : x
  2. Step 2: Convert to fraction form
    425,663.21/638,494.82 = 404,378.24/x
  3. Step 3: Cross multiply
    425,663.21x = 638,494.82 × 404,378.24
  4. Step 4: Simplify right side
    425,663.21x = 258,193,406,346.35
  5. Step 5: Solve for x
    x = 258,193,406,346.35/425,663.21
  6. Step 6: Final answer
    x = 606,567.35

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Similar ratio
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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.