Home / 1,078,945.31-1,618,417.51-320,783.50

Finding the Fourth Proportional to 1,078,945.31, 1,618,417.51 and 320,783.50

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Solution

The fourth proportional to 1,078,945.31, 1,618,417.51 and 320,783.50 is: 481,175.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,945.31 : 1,618,417.51 = 320,783.50 : x
  2. Step 2: Convert to fraction form
    1,078,945.31/1,618,417.51 = 320,783.50/x
  3. Step 3: Cross multiply
    1,078,945.31x = 1,618,417.51 × 320,783.50
  4. Step 4: Simplify right side
    1,078,945.31x = 519,161,633,319.09
  5. Step 5: Solve for x
    x = 519,161,633,319.09/1,078,945.31
  6. Step 6: Final answer
    x = 481,175.11

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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.