Home / 1,215,893.18-1,678,019.46-672,017.28

Finding the Fourth Proportional to 1,215,893.18, 1,678,019.46 and 672,017.28

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Solution

The fourth proportional to 1,215,893.18, 1,678,019.46 and 672,017.28 is: 927,431.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,893.18 : 1,678,019.46 = 672,017.28 : x
  2. Step 2: Convert to fraction form
    1,215,893.18/1,678,019.46 = 672,017.28/x
  3. Step 3: Cross multiply
    1,215,893.18x = 1,678,019.46 × 672,017.28
  4. Step 4: Simplify right side
    1,215,893.18x = 1,127,658,073,296.27
  5. Step 5: Solve for x
    x = 1,127,658,073,296.27/1,215,893.18
  6. Step 6: Final answer
    x = 927,431.86

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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.