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Finding the Fourth Proportional to 591,400.15, 815,874.71 and 361,967.65

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Solution

The fourth proportional to 591,400.15, 815,874.71 and 361,967.65 is: 499,357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,400.15 : 815,874.71 = 361,967.65 : x
  2. Step 2: Convert to fraction form
    591,400.15/815,874.71 = 361,967.65/x
  3. Step 3: Cross multiply
    591,400.15x = 815,874.71 × 361,967.65
  4. Step 4: Simplify right side
    591,400.15x = 295,320,249,663.29
  5. Step 5: Solve for x
    x = 295,320,249,663.29/591,400.15
  6. Step 6: Final answer
    x = 499,357.75

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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.