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Finding the Fourth Proportional to 689,937, 1,034,910.22 and 263,357.80

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Solution

The fourth proportional to 689,937, 1,034,910.22 and 263,357.80 is: 395,038.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,937 : 1,034,910.22 = 263,357.80 : x
  2. Step 2: Convert to fraction form
    689,937/1,034,910.22 = 263,357.80/x
  3. Step 3: Cross multiply
    689,937x = 1,034,910.22 × 263,357.80
  4. Step 4: Simplify right side
    689,937x = 272,551,678,736.72
  5. Step 5: Solve for x
    x = 272,551,678,736.72/689,937
  6. Step 6: Final answer
    x = 395,038.50

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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.