Home / 745,166-1,028,329.20-405,636.80

Finding the Fourth Proportional to 745,166, 1,028,329.20 and 405,636.80

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Solution

The fourth proportional to 745,166, 1,028,329.20 and 405,636.80 is: 559,778.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,166 : 1,028,329.20 = 405,636.80 : x
  2. Step 2: Convert to fraction form
    745,166/1,028,329.20 = 405,636.80/x
  3. Step 3: Cross multiply
    745,166x = 1,028,329.20 × 405,636.80
  4. Step 4: Simplify right side
    745,166x = 417,128,166,034.56
  5. Step 5: Solve for x
    x = 417,128,166,034.56/745,166
  6. Step 6: Final answer
    x = 559,778.85

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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.