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Finding the Fourth Proportional to 790,959.44, 1,091,518.58 and 428,375

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Solution

The fourth proportional to 790,959.44, 1,091,518.58 and 428,375 is: 591,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,959.44 : 1,091,518.58 = 428,375 : x
  2. Step 2: Convert to fraction form
    790,959.44/1,091,518.58 = 428,375/x
  3. Step 3: Cross multiply
    790,959.44x = 1,091,518.58 × 428,375
  4. Step 4: Simplify right side
    790,959.44x = 467,579,271,707.50
  5. Step 5: Solve for x
    x = 467,579,271,707.50/790,959.44
  6. Step 6: Final answer
    x = 591,154.55

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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.