Home / 1,209,943.81-1,814,903.42-311,382.06

Finding the Fourth Proportional to 1,209,943.81, 1,814,903.42 and 311,382.06

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Solution

The fourth proportional to 1,209,943.81, 1,814,903.42 and 311,382.06 is: 467,069.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,943.81 : 1,814,903.42 = 311,382.06 : x
  2. Step 2: Convert to fraction form
    1,209,943.81/1,814,903.42 = 311,382.06/x
  3. Step 3: Cross multiply
    1,209,943.81x = 1,814,903.42 × 311,382.06
  4. Step 4: Simplify right side
    1,209,943.81x = 565,128,365,620.65
  5. Step 5: Solve for x
    x = 565,128,365,620.65/1,209,943.81
  6. Step 6: Final answer
    x = 467,069.93

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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.