Home / 768,080.03-1,059,928.40-428,540.99

Finding the Fourth Proportional to 768,080.03, 1,059,928.40 and 428,540.99

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Solution

The fourth proportional to 768,080.03, 1,059,928.40 and 428,540.99 is: 591,374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,080.03 : 1,059,928.40 = 428,540.99 : x
  2. Step 2: Convert to fraction form
    768,080.03/1,059,928.40 = 428,540.99/x
  3. Step 3: Cross multiply
    768,080.03x = 1,059,928.40 × 428,540.99
  4. Step 4: Simplify right side
    768,080.03x = 454,222,761,636.83
  5. Step 5: Solve for x
    x = 454,222,761,636.83/768,080.03
  6. Step 6: Final answer
    x = 591,374.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.