Home / 870,992.12-1,201,960.14-489,010.04

Finding the Fourth Proportional to 870,992.12, 1,201,960.14 and 489,010.04

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Solution

The fourth proportional to 870,992.12, 1,201,960.14 and 489,010.04 is: 674,828.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,992.12 : 1,201,960.14 = 489,010.04 : x
  2. Step 2: Convert to fraction form
    870,992.12/1,201,960.14 = 489,010.04/x
  3. Step 3: Cross multiply
    870,992.12x = 1,201,960.14 × 489,010.04
  4. Step 4: Simplify right side
    870,992.12x = 587,770,576,139.81
  5. Step 5: Solve for x
    x = 587,770,576,139.81/870,992.12
  6. Step 6: Final answer
    x = 674,828.81

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1.5x scale

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.