Home / 870,355.47-1,305,529.55-491,103.55

Finding the Fourth Proportional to 870,355.47, 1,305,529.55 and 491,103.55

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Solution

The fourth proportional to 870,355.47, 1,305,529.55 and 491,103.55 is: 736,653.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,355.47 : 1,305,529.55 = 491,103.55 : x
  2. Step 2: Convert to fraction form
    870,355.47/1,305,529.55 = 491,103.55/x
  3. Step 3: Cross multiply
    870,355.47x = 1,305,529.55 × 491,103.55
  4. Step 4: Simplify right side
    870,355.47x = 641,150,190,107.26
  5. Step 5: Solve for x
    x = 641,150,190,107.26/870,355.47
  6. Step 6: Final answer
    x = 736,653.26

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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.