Home / 745,161-1,028,322.30-405,631.80

Finding the Fourth Proportional to 745,161, 1,028,322.30 and 405,631.80

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Solution

The fourth proportional to 745,161, 1,028,322.30 and 405,631.80 is: 559,771.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,161 : 1,028,322.30 = 405,631.80 : x
  2. Step 2: Convert to fraction form
    745,161/1,028,322.30 = 405,631.80/x
  3. Step 3: Cross multiply
    745,161x = 1,028,322.30 × 405,631.80
  4. Step 4: Simplify right side
    745,161x = 417,120,225,529.14
  5. Step 5: Solve for x
    x = 417,120,225,529.14/745,161
  6. Step 6: Final answer
    x = 559,771.95

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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.