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Finding the Fourth Proportional to 628,306.80, 942,460.20 and 486,589.20

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Solution

The fourth proportional to 628,306.80, 942,460.20 and 486,589.20 is: 729,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,306.80 : 942,460.20 = 486,589.20 : x
  2. Step 2: Convert to fraction form
    628,306.80/942,460.20 = 486,589.20/x
  3. Step 3: Cross multiply
    628,306.80x = 942,460.20 × 486,589.20
  4. Step 4: Simplify right side
    628,306.80x = 458,590,954,749.84
  5. Step 5: Solve for x
    x = 458,590,954,749.84/628,306.80
  6. Step 6: Final answer
    x = 729,883.80

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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.