Home / 1,138,970.25-1,571,811.75-629,705.43

Finding the Fourth Proportional to 1,138,970.25, 1,571,811.75 and 629,705.43

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Solution

The fourth proportional to 1,138,970.25, 1,571,811.75 and 629,705.43 is: 869,011.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,970.25 : 1,571,811.75 = 629,705.43 : x
  2. Step 2: Convert to fraction form
    1,138,970.25/1,571,811.75 = 629,705.43/x
  3. Step 3: Cross multiply
    1,138,970.25x = 1,571,811.75 × 629,705.43
  4. Step 4: Simplify right side
    1,138,970.25x = 989,778,393,912.80
  5. Step 5: Solve for x
    x = 989,778,393,912.80/1,138,970.25
  6. Step 6: Final answer
    x = 869,011.63

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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.