Home / 1,228,710.78-1,843,896.06-429,999.30

Finding the Fourth Proportional to 1,228,710.78, 1,843,896.06 and 429,999.30

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Solution

The fourth proportional to 1,228,710.78, 1,843,896.06 and 429,999.30 is: 645,289.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,710.78 : 1,843,896.06 = 429,999.30 : x
  2. Step 2: Convert to fraction form
    1,228,710.78/1,843,896.06 = 429,999.30/x
  3. Step 3: Cross multiply
    1,228,710.78x = 1,843,896.06 × 429,999.30
  4. Step 4: Simplify right side
    1,228,710.78x = 792,874,015,072.76
  5. Step 5: Solve for x
    x = 792,874,015,072.76/1,228,710.78
  6. Step 6: Final answer
    x = 645,289.38

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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.