Home / 1,378,582.70-2,067,874.05-419,036.45

Finding the Fourth Proportional to 1,378,582.70, 2,067,874.05 and 419,036.45

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Solution

The fourth proportional to 1,378,582.70, 2,067,874.05 and 419,036.45 is: 628,554.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,582.70 : 2,067,874.05 = 419,036.45 : x
  2. Step 2: Convert to fraction form
    1,378,582.70/2,067,874.05 = 419,036.45/x
  3. Step 3: Cross multiply
    1,378,582.70x = 2,067,874.05 × 419,036.45
  4. Step 4: Simplify right side
    1,378,582.70x = 866,514,600,959.12
  5. Step 5: Solve for x
    x = 866,514,600,959.12/1,378,582.70
  6. Step 6: Final answer
    x = 628,554.68

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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.