Home / 862,652.80-1,293,979.20-489,404.80

Finding the Fourth Proportional to 862,652.80, 1,293,979.20 and 489,404.80

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Solution

The fourth proportional to 862,652.80, 1,293,979.20 and 489,404.80 is: 734,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,652.80 : 1,293,979.20 = 489,404.80 : x
  2. Step 2: Convert to fraction form
    862,652.80/1,293,979.20 = 489,404.80/x
  3. Step 3: Cross multiply
    862,652.80x = 1,293,979.20 × 489,404.80
  4. Step 4: Simplify right side
    862,652.80x = 633,279,631,580.16
  5. Step 5: Solve for x
    x = 633,279,631,580.16/862,652.80
  6. Step 6: Final answer
    x = 734,107.20

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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.