Home / 628,987.20-943,480.80-419,035.20

Finding the Fourth Proportional to 628,987.20, 943,480.80 and 419,035.20

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Solution

The fourth proportional to 628,987.20, 943,480.80 and 419,035.20 is: 628,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,987.20 : 943,480.80 = 419,035.20 : x
  2. Step 2: Convert to fraction form
    628,987.20/943,480.80 = 419,035.20/x
  3. Step 3: Cross multiply
    628,987.20x = 943,480.80 × 419,035.20
  4. Step 4: Simplify right side
    628,987.20x = 395,351,665,724.16
  5. Step 5: Solve for x
    x = 395,351,665,724.16/628,987.20
  6. Step 6: Final answer
    x = 628,552.80

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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.