Home / 1,207,478.38-1,811,204.78-308,912.98

Finding the Fourth Proportional to 1,207,478.38, 1,811,204.78 and 308,912.98

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Solution

The fourth proportional to 1,207,478.38, 1,811,204.78 and 308,912.98 is: 463,366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,478.38 : 1,811,204.78 = 308,912.98 : x
  2. Step 2: Convert to fraction form
    1,207,478.38/1,811,204.78 = 308,912.98/x
  3. Step 3: Cross multiply
    1,207,478.38x = 1,811,204.78 × 308,912.98
  4. Step 4: Simplify right side
    1,207,478.38x = 559,504,665,980.04
  5. Step 5: Solve for x
    x = 559,504,665,980.04/1,207,478.38
  6. Step 6: Final answer
    x = 463,366.20

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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.