Home / 1,269,835.67-1,904,636.86-428,394.71

Finding the Fourth Proportional to 1,269,835.67, 1,904,636.86 and 428,394.71

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Solution

The fourth proportional to 1,269,835.67, 1,904,636.86 and 428,394.71 is: 642,552.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,835.67 : 1,904,636.86 = 428,394.71 : x
  2. Step 2: Convert to fraction form
    1,269,835.67/1,904,636.86 = 428,394.71/x
  3. Step 3: Cross multiply
    1,269,835.67x = 1,904,636.86 × 428,394.71
  4. Step 4: Simplify right side
    1,269,835.67x = 815,936,344,700.84
  5. Step 5: Solve for x
    x = 815,936,344,700.84/1,269,835.67
  6. Step 6: Final answer
    x = 642,552.71

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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.