Home / 1,320,960.96-1,980,816.90-511,724.40

Finding the Fourth Proportional to 1,320,960.96, 1,980,816.90 and 511,724.40

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Solution

The fourth proportional to 1,320,960.96, 1,980,816.90 and 511,724.40 is: 767,344.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,960.96 : 1,980,816.90 = 511,724.40 : x
  2. Step 2: Convert to fraction form
    1,320,960.96/1,980,816.90 = 511,724.40/x
  3. Step 3: Cross multiply
    1,320,960.96x = 1,980,816.90 × 511,724.40
  4. Step 4: Simplify right side
    1,320,960.96x = 1,013,632,339,662.36
  5. Step 5: Solve for x
    x = 1,013,632,339,662.36/1,320,960.96
  6. Step 6: Final answer
    x = 767,344.66

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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.