Home / 618,352,642.49-853,317,082.73-339,888,182.45

Finding the Fourth Proportional to 618,352,642.49, 853,317,082.73 and 339,888,182.45

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Solution

The fourth proportional to 618,352,642.49, 853,317,082.73 and 339,888,182.45 is: 469,040,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,352,642.49 : 853,317,082.73 = 339,888,182.45 : x
  2. Step 2: Convert to fraction form
    618,352,642.49/853,317,082.73 = 339,888,182.45/x
  3. Step 3: Cross multiply
    618,352,642.49x = 853,317,082.73 × 339,888,182.45
  4. Step 4: Simplify right side
    618,352,642.49x = 290,032,392,299,219,072
  5. Step 5: Solve for x
    x = 290,032,392,299,219,072/618,352,642.49
  6. Step 6: Final answer
    x = 469,040,434.81

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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.