Home / 745,029-1,028,140.02-405,499.68

Finding the Fourth Proportional to 745,029, 1,028,140.02 and 405,499.68

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Solution

The fourth proportional to 745,029, 1,028,140.02 and 405,499.68 is: 559,589.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,029 : 1,028,140.02 = 405,499.68 : x
  2. Step 2: Convert to fraction form
    745,029/1,028,140.02 = 405,499.68/x
  3. Step 3: Cross multiply
    745,029x = 1,028,140.02 × 405,499.68
  4. Step 4: Simplify right side
    745,029x = 416,910,449,105.19
  5. Step 5: Solve for x
    x = 416,910,449,105.19/745,029
  6. Step 6: Final answer
    x = 559,589.56

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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.