Home / 1,383,997.41-1,909,916.69-780,385.41

Finding the Fourth Proportional to 1,383,997.41, 1,909,916.69 and 780,385.41

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Solution

The fourth proportional to 1,383,997.41, 1,909,916.69 and 780,385.41 is: 1,076,932.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,997.41 : 1,909,916.69 = 780,385.41 : x
  2. Step 2: Convert to fraction form
    1,383,997.41/1,909,916.69 = 780,385.41/x
  3. Step 3: Cross multiply
    1,383,997.41x = 1,909,916.69 × 780,385.41
  4. Step 4: Simplify right side
    1,383,997.41x = 1,490,471,115,289.57
  5. Step 5: Solve for x
    x = 1,490,471,115,289.57/1,383,997.41
  6. Step 6: Final answer
    x = 1,076,932.01

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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.