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Finding the Fourth Proportional to 591,870.33, 816,780.66 and 319,938.21

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Solution

The fourth proportional to 591,870.33, 816,780.66 and 319,938.21 is: 441,514.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,870.33 : 816,780.66 = 319,938.21 : x
  2. Step 2: Convert to fraction form
    591,870.33/816,780.66 = 319,938.21/x
  3. Step 3: Cross multiply
    591,870.33x = 816,780.66 × 319,938.21
  4. Step 4: Simplify right side
    591,870.33x = 261,319,342,323.02
  5. Step 5: Solve for x
    x = 261,319,342,323.02/591,870.33
  6. Step 6: Final answer
    x = 441,514.52

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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.