Home / 427,320.69-641,052.32-190,654.49

Finding the Fourth Proportional to 427,320.69, 641,052.32 and 190,654.49

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Solution

The fourth proportional to 427,320.69, 641,052.32 and 190,654.49 is: 286,013.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,320.69 : 641,052.32 = 190,654.49 : x
  2. Step 2: Convert to fraction form
    427,320.69/641,052.32 = 190,654.49/x
  3. Step 3: Cross multiply
    427,320.69x = 641,052.32 × 190,654.49
  4. Step 4: Simplify right side
    427,320.69x = 122,219,498,974.38
  5. Step 5: Solve for x
    x = 122,219,498,974.38/427,320.69
  6. Step 6: Final answer
    x = 286,013.53

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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.