Home / 870,987.96-1,201,963.38-489,022.95

Finding the Fourth Proportional to 870,987.96, 1,201,963.38 and 489,022.95

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Solution

The fourth proportional to 870,987.96, 1,201,963.38 and 489,022.95 is: 674,851.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,987.96 : 1,201,963.38 = 489,022.95 : x
  2. Step 2: Convert to fraction form
    870,987.96/1,201,963.38 = 489,022.95/x
  3. Step 3: Cross multiply
    870,987.96x = 1,201,963.38 × 489,022.95
  4. Step 4: Simplify right side
    870,987.96x = 587,787,677,879.57
  5. Step 5: Solve for x
    x = 587,787,677,879.57/870,987.96
  6. Step 6: Final answer
    x = 674,851.67

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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.