Home / 1,215,891.02-1,678,016.43-672,015.12

Finding the Fourth Proportional to 1,215,891.02, 1,678,016.43 and 672,015.12

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Solution

The fourth proportional to 1,215,891.02, 1,678,016.43 and 672,015.12 is: 927,428.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,891.02 : 1,678,016.43 = 672,015.12 : x
  2. Step 2: Convert to fraction form
    1,215,891.02/1,678,016.43 = 672,015.12/x
  3. Step 3: Cross multiply
    1,215,891.02x = 1,678,016.43 × 672,015.12
  4. Step 4: Simplify right side
    1,215,891.02x = 1,127,652,412,568.42
  5. Step 5: Solve for x
    x = 1,127,652,412,568.42/1,215,891.02
  6. Step 6: Final answer
    x = 927,428.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.