Home / 1,311,970.40-1,968,231.76-743,623.82

Finding the Fourth Proportional to 1,311,970.40, 1,968,231.76 and 743,623.82

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Solution

The fourth proportional to 1,311,970.40, 1,968,231.76 and 743,623.82 is: 1,115,592.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,970.40 : 1,968,231.76 = 743,623.82 : x
  2. Step 2: Convert to fraction form
    1,311,970.40/1,968,231.76 = 743,623.82/x
  3. Step 3: Cross multiply
    1,311,970.40x = 1,968,231.76 × 743,623.82
  4. Step 4: Simplify right side
    1,311,970.40x = 1,463,624,020,016.52
  5. Step 5: Solve for x
    x = 1,463,624,020,016.52/1,311,970.40
  6. Step 6: Final answer
    x = 1,115,592.26

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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.