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Finding the Fourth Proportional to 768,104.40, 1,059,975 and 423,942.96

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Solution

The fourth proportional to 768,104.40, 1,059,975 and 423,942.96 is: 585,036.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,104.40 : 1,059,975 = 423,942.96 : x
  2. Step 2: Convert to fraction form
    768,104.40/1,059,975 = 423,942.96/x
  3. Step 3: Cross multiply
    768,104.40x = 1,059,975 × 423,942.96
  4. Step 4: Simplify right side
    768,104.40x = 449,368,939,026
  5. Step 5: Solve for x
    x = 449,368,939,026/768,104.40
  6. Step 6: Final answer
    x = 585,036.28

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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.