Home / 1,320,959.46-1,980,814.65-511,722.90

Finding the Fourth Proportional to 1,320,959.46, 1,980,814.65 and 511,722.90

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Solution

The fourth proportional to 1,320,959.46, 1,980,814.65 and 511,722.90 is: 767,342.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,959.46 : 1,980,814.65 = 511,722.90 : x
  2. Step 2: Convert to fraction form
    1,320,959.46/1,980,814.65 = 511,722.90/x
  3. Step 3: Cross multiply
    1,320,959.46x = 1,980,814.65 × 511,722.90
  4. Step 4: Simplify right side
    1,320,959.46x = 1,013,628,217,060.49
  5. Step 5: Solve for x
    x = 1,013,628,217,060.49/1,320,959.46
  6. Step 6: Final answer
    x = 767,342.41

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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.