Home / 870,986.46-1,201,930.32-489,029.34

Finding the Fourth Proportional to 870,986.46, 1,201,930.32 and 489,029.34

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Solution

The fourth proportional to 870,986.46, 1,201,930.32 and 489,029.34 is: 674,843.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,986.46 : 1,201,930.32 = 489,029.34 : x
  2. Step 2: Convert to fraction form
    870,986.46/1,201,930.32 = 489,029.34/x
  3. Step 3: Cross multiply
    870,986.46x = 1,201,930.32 × 489,029.34
  4. Step 4: Simplify right side
    870,986.46x = 587,779,191,115.59
  5. Step 5: Solve for x
    x = 587,779,191,115.59/870,986.46
  6. Step 6: Final answer
    x = 674,843.09

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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.