Home / 745,395.63-1,028,645.97-405,863.88

Finding the Fourth Proportional to 745,395.63, 1,028,645.97 and 405,863.88

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Solution

The fourth proportional to 745,395.63, 1,028,645.97 and 405,863.88 is: 560,092.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,395.63 : 1,028,645.97 = 405,863.88 : x
  2. Step 2: Convert to fraction form
    745,395.63/1,028,645.97 = 405,863.88/x
  3. Step 3: Cross multiply
    745,395.63x = 1,028,645.97 × 405,863.88
  4. Step 4: Simplify right side
    745,395.63x = 417,490,244,530.56
  5. Step 5: Solve for x
    x = 417,490,244,530.56/745,395.63
  6. Step 6: Final answer
    x = 560,092.15

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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.