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Finding the Fourth Proportional to 993,954.80, 1,489,765.80 and 425,334.80

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Solution

The fourth proportional to 993,954.80, 1,489,765.80 and 425,334.80 is: 637,503.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,954.80 : 1,489,765.80 = 425,334.80 : x
  2. Step 2: Convert to fraction form
    993,954.80/1,489,765.80 = 425,334.80/x
  3. Step 3: Cross multiply
    993,954.80x = 1,489,765.80 × 425,334.80
  4. Step 4: Simplify right side
    993,954.80x = 633,649,238,589.84
  5. Step 5: Solve for x
    x = 633,649,238,589.84/993,954.80
  6. Step 6: Final answer
    x = 637,503.07

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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.