Home / 1,515,187.68-2,091,316.86-870,981.60

Finding the Fourth Proportional to 1,515,187.68, 2,091,316.86 and 870,981.60

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Solution

The fourth proportional to 1,515,187.68, 2,091,316.86 and 870,981.60 is: 1,202,160.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,187.68 : 2,091,316.86 = 870,981.60 : x
  2. Step 2: Convert to fraction form
    1,515,187.68/2,091,316.86 = 870,981.60/x
  3. Step 3: Cross multiply
    1,515,187.68x = 2,091,316.86 × 870,981.60
  4. Step 4: Simplify right side
    1,515,187.68x = 1,821,498,504,829.78
  5. Step 5: Solve for x
    x = 1,821,498,504,829.78/1,515,187.68
  6. Step 6: Final answer
    x = 1,202,160.32

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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.