Home / 431,123,449.73-646,675,868.14-120,222,784.25

Finding the Fourth Proportional to 431,123,449.73, 646,675,868.14 and 120,222,784.25

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Solution

The fourth proportional to 431,123,449.73, 646,675,868.14 and 120,222,784.25 is: 180,331,581.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,123,449.73 : 646,675,868.14 = 120,222,784.25 : x
  2. Step 2: Convert to fraction form
    431,123,449.73/646,675,868.14 = 120,222,784.25/x
  3. Step 3: Cross multiply
    431,123,449.73x = 646,675,868.14 × 120,222,784.25
  4. Step 4: Simplify right side
    431,123,449.73x = 77,745,173,378,284,208
  5. Step 5: Solve for x
    x = 77,745,173,378,284,208/431,123,449.73
  6. Step 6: Final answer
    x = 180,331,581.19

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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.