Home / 870,862.96-1,201,789.92-488,890.54

Finding the Fourth Proportional to 870,862.96, 1,201,789.92 and 488,890.54

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Solution

The fourth proportional to 870,862.96, 1,201,789.92 and 488,890.54 is: 674,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,862.96 : 1,201,789.92 = 488,890.54 : x
  2. Step 2: Convert to fraction form
    870,862.96/1,201,789.92 = 488,890.54/x
  3. Step 3: Cross multiply
    870,862.96x = 1,201,789.92 × 488,890.54
  4. Step 4: Simplify right side
    870,862.96x = 587,543,722,955.36
  5. Step 5: Solve for x
    x = 587,543,722,955.36/870,862.96
  6. Step 6: Final answer
    x = 674,668.40

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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.