Home / 872,383.62-1,308,784.55-422,578.77

Finding the Fourth Proportional to 872,383.62, 1,308,784.55 and 422,578.77

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Solution

The fourth proportional to 872,383.62, 1,308,784.55 and 422,578.77 is: 633,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,383.62 : 1,308,784.55 = 422,578.77 : x
  2. Step 2: Convert to fraction form
    872,383.62/1,308,784.55 = 422,578.77/x
  3. Step 3: Cross multiply
    872,383.62x = 1,308,784.55 × 422,578.77
  4. Step 4: Simplify right side
    872,383.62x = 553,064,563,221.11
  5. Step 5: Solve for x
    x = 553,064,563,221.11/872,383.62
  6. Step 6: Final answer
    x = 633,969.45

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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.