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Finding the Fourth Proportional to 628,321.80, 942,482.70 and 486,604.20

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Solution

The fourth proportional to 628,321.80, 942,482.70 and 486,604.20 is: 729,906.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,321.80 : 942,482.70 = 486,604.20 : x
  2. Step 2: Convert to fraction form
    628,321.80/942,482.70 = 486,604.20/x
  3. Step 3: Cross multiply
    628,321.80x = 942,482.70 × 486,604.20
  4. Step 4: Simplify right side
    628,321.80x = 458,616,040,247.34
  5. Step 5: Solve for x
    x = 458,616,040,247.34/628,321.80
  6. Step 6: Final answer
    x = 729,906.30

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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.