Home / 1,968,780.87-2,949,846.93-1,209,038.94

Finding the Fourth Proportional to 1,968,780.87, 2,949,846.93 and 1,209,038.94

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Solution

The fourth proportional to 1,968,780.87, 2,949,846.93 and 1,209,038.94 is: 1,811,516.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968,780.87 : 2,949,846.93 = 1,209,038.94 : x
  2. Step 2: Convert to fraction form
    1,968,780.87/2,949,846.93 = 1,209,038.94/x
  3. Step 3: Cross multiply
    1,968,780.87x = 2,949,846.93 × 1,209,038.94
  4. Step 4: Simplify right side
    1,968,780.87x = 3,566,479,805,409.45
  5. Step 5: Solve for x
    x = 3,566,479,805,409.45/1,968,780.87
  6. Step 6: Final answer
    x = 1,811,516.89

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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.