Home / 1,215,891.52-1,678,017.12-672,015.62

Finding the Fourth Proportional to 1,215,891.52, 1,678,017.12 and 672,015.62

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Solution

The fourth proportional to 1,215,891.52, 1,678,017.12 and 672,015.62 is: 927,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,891.52 : 1,678,017.12 = 672,015.62 : x
  2. Step 2: Convert to fraction form
    1,215,891.52/1,678,017.12 = 672,015.62/x
  3. Step 3: Cross multiply
    1,215,891.52x = 1,678,017.12 × 672,015.62
  4. Step 4: Simplify right side
    1,215,891.52x = 1,127,653,715,267.41
  5. Step 5: Solve for x
    x = 1,127,653,715,267.41/1,215,891.52
  6. Step 6: Final answer
    x = 927,429.54

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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.