Home / 591,901.72-816,823.29-319,969.78

Finding the Fourth Proportional to 591,901.72, 816,823.29 and 319,969.78

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Solution

The fourth proportional to 591,901.72, 816,823.29 and 319,969.78 is: 441,557.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,901.72 : 816,823.29 = 319,969.78 : x
  2. Step 2: Convert to fraction form
    591,901.72/816,823.29 = 319,969.78/x
  3. Step 3: Cross multiply
    591,901.72x = 816,823.29 × 319,969.78
  4. Step 4: Simplify right side
    591,901.72x = 261,358,768,400.18
  5. Step 5: Solve for x
    x = 261,358,768,400.18/591,901.72
  6. Step 6: Final answer
    x = 441,557.71

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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.