Home / 745,245.74-1,028,443.01-405,716.42

Finding the Fourth Proportional to 745,245.74, 1,028,443.01 and 405,716.42

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Solution

The fourth proportional to 745,245.74, 1,028,443.01 and 405,716.42 is: 559,890.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,245.74 : 1,028,443.01 = 405,716.42 : x
  2. Step 2: Convert to fraction form
    745,245.74/1,028,443.01 = 405,716.42/x
  3. Step 3: Cross multiply
    745,245.74x = 1,028,443.01 × 405,716.42
  4. Step 4: Simplify right side
    745,245.74x = 417,256,209,020.43
  5. Step 5: Solve for x
    x = 417,256,209,020.43/745,245.74
  6. Step 6: Final answer
    x = 559,890.77

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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.