Home / 1,320,954.61-1,980,807.40-511,718.06

Finding the Fourth Proportional to 1,320,954.61, 1,980,807.40 and 511,718.06

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Solution

The fourth proportional to 1,320,954.61, 1,980,807.40 and 511,718.06 is: 767,335.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,954.61 : 1,980,807.40 = 511,718.06 : x
  2. Step 2: Convert to fraction form
    1,320,954.61/1,980,807.40 = 511,718.06/x
  3. Step 3: Cross multiply
    1,320,954.61x = 1,980,807.40 × 511,718.06
  4. Step 4: Simplify right side
    1,320,954.61x = 1,013,614,910,057.61
  5. Step 5: Solve for x
    x = 1,013,614,910,057.61/1,320,954.61
  6. Step 6: Final answer
    x = 767,335.15

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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.