Home / 628,320.80-942,481.20-486,603.20

Finding the Fourth Proportional to 628,320.80, 942,481.20 and 486,603.20

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Solution

The fourth proportional to 628,320.80, 942,481.20 and 486,603.20 is: 729,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,320.80 : 942,481.20 = 486,603.20 : x
  2. Step 2: Convert to fraction form
    628,320.80/942,481.20 = 486,603.20/x
  3. Step 3: Cross multiply
    628,320.80x = 942,481.20 × 486,603.20
  4. Step 4: Simplify right side
    628,320.80x = 458,614,367,859.84
  5. Step 5: Solve for x
    x = 458,614,367,859.84/628,320.80
  6. Step 6: Final answer
    x = 729,904.80

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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.