Home / 870,986.12-1,201,930.02-489,029

Finding the Fourth Proportional to 870,986.12, 1,201,930.02 and 489,029

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Solution

The fourth proportional to 870,986.12, 1,201,930.02 and 489,029 is: 674,842.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,986.12 : 1,201,930.02 = 489,029 : x
  2. Step 2: Convert to fraction form
    870,986.12/1,201,930.02 = 489,029/x
  3. Step 3: Cross multiply
    870,986.12x = 1,201,930.02 × 489,029
  4. Step 4: Simplify right side
    870,986.12x = 587,778,635,750.58
  5. Step 5: Solve for x
    x = 587,778,635,750.58/870,986.12
  6. Step 6: Final answer
    x = 674,842.71

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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.