Home / 1,115,074.53-1,538,809.02-685,635.21

Finding the Fourth Proportional to 1,115,074.53, 1,538,809.02 and 685,635.21

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Solution

The fourth proportional to 1,115,074.53, 1,538,809.02 and 685,635.21 is: 946,180.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,074.53 : 1,538,809.02 = 685,635.21 : x
  2. Step 2: Convert to fraction form
    1,115,074.53/1,538,809.02 = 685,635.21/x
  3. Step 3: Cross multiply
    1,115,074.53x = 1,538,809.02 × 685,635.21
  4. Step 4: Simplify right side
    1,115,074.53x = 1,055,061,645,577.59
  5. Step 5: Solve for x
    x = 1,055,061,645,577.59/1,115,074.53
  6. Step 6: Final answer
    x = 946,180.38

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Double scale
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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.