Home / 1,320,944.49-1,980,792.09-511,707.92

Finding the Fourth Proportional to 1,320,944.49, 1,980,792.09 and 511,707.92

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Solution

The fourth proportional to 1,320,944.49, 1,980,792.09 and 511,707.92 is: 767,319.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,944.49 : 1,980,792.09 = 511,707.92 : x
  2. Step 2: Convert to fraction form
    1,320,944.49/1,980,792.09 = 511,707.92/x
  3. Step 3: Cross multiply
    1,320,944.49x = 1,980,792.09 × 511,707.92
  4. Step 4: Simplify right side
    1,320,944.49x = 1,013,586,990,422.39
  5. Step 5: Solve for x
    x = 1,013,586,990,422.39/1,320,944.49
  6. Step 6: Final answer
    x = 767,319.90

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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.