Home / 1,421,431.29-1,961,701.61-809,450.37

Finding the Fourth Proportional to 1,421,431.29, 1,961,701.61 and 809,450.37

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Solution

The fourth proportional to 1,421,431.29, 1,961,701.61 and 809,450.37 is: 1,117,113.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,431.29 : 1,961,701.61 = 809,450.37 : x
  2. Step 2: Convert to fraction form
    1,421,431.29/1,961,701.61 = 809,450.37/x
  3. Step 3: Cross multiply
    1,421,431.29x = 1,961,701.61 × 809,450.37
  4. Step 4: Simplify right side
    1,421,431.29x = 1,587,900,089,996.84
  5. Step 5: Solve for x
    x = 1,587,900,089,996.84/1,421,431.29
  6. Step 6: Final answer
    x = 1,117,113.50

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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.