Home / 2,309,033.40-3,186,564.50-1,290,438.12

Finding the Fourth Proportional to 2,309,033.40, 3,186,564.50 and 1,290,438.12

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Solution

The fourth proportional to 2,309,033.40, 3,186,564.50 and 1,290,438.12 is: 1,780,859.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309,033.40 : 3,186,564.50 = 1,290,438.12 : x
  2. Step 2: Convert to fraction form
    2,309,033.40/3,186,564.50 = 1,290,438.12/x
  3. Step 3: Cross multiply
    2,309,033.40x = 3,186,564.50 × 1,290,438.12
  4. Step 4: Simplify right side
    2,309,033.40x = 4,112,064,302,638.74
  5. Step 5: Solve for x
    x = 4,112,064,302,638.74/2,309,033.40
  6. Step 6: Final answer
    x = 1,780,859.60

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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.