Home / 1,272,469.29-1,908,654.07-431,021.01

Finding the Fourth Proportional to 1,272,469.29, 1,908,654.07 and 431,021.01

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Solution

The fourth proportional to 1,272,469.29, 1,908,654.07 and 431,021.01 is: 646,514.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,469.29 : 1,908,654.07 = 431,021.01 : x
  2. Step 2: Convert to fraction form
    1,272,469.29/1,908,654.07 = 431,021.01/x
  3. Step 3: Cross multiply
    1,272,469.29x = 1,908,654.07 × 431,021.01
  4. Step 4: Simplify right side
    1,272,469.29x = 822,670,004,992.01
  5. Step 5: Solve for x
    x = 822,670,004,992.01/1,272,469.29
  6. Step 6: Final answer
    x = 646,514.62

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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.