Home / 1,424,640.78-1,966,003.83-780,060.78

Finding the Fourth Proportional to 1,424,640.78, 1,966,003.83 and 780,060.78

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Solution

The fourth proportional to 1,424,640.78, 1,966,003.83 and 780,060.78 is: 1,076,483.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,640.78 : 1,966,003.83 = 780,060.78 : x
  2. Step 2: Convert to fraction form
    1,424,640.78/1,966,003.83 = 780,060.78/x
  3. Step 3: Cross multiply
    1,424,640.78x = 1,966,003.83 × 780,060.78
  4. Step 4: Simplify right side
    1,424,640.78x = 1,533,602,481,112.79
  5. Step 5: Solve for x
    x = 1,533,602,481,112.79/1,424,640.78
  6. Step 6: Final answer
    x = 1,076,483.63

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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.