Home / 1,388,714.72-2,082,641.31-489,946.28

Finding the Fourth Proportional to 1,388,714.72, 2,082,641.31 and 489,946.28

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Solution

The fourth proportional to 1,388,714.72, 2,082,641.31 and 489,946.28 is: 734,767.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,714.72 : 2,082,641.31 = 489,946.28 : x
  2. Step 2: Convert to fraction form
    1,388,714.72/2,082,641.31 = 489,946.28/x
  3. Step 3: Cross multiply
    1,388,714.72x = 2,082,641.31 × 489,946.28
  4. Step 4: Simplify right side
    1,388,714.72x = 1,020,382,351,995.62
  5. Step 5: Solve for x
    x = 1,020,382,351,995.62/1,388,714.72
  6. Step 6: Final answer
    x = 734,767.44

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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.