Home / 745,273.86-1,028,496.42-405,760.74

Finding the Fourth Proportional to 745,273.86, 1,028,496.42 and 405,760.74

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Solution

The fourth proportional to 745,273.86, 1,028,496.42 and 405,760.74 is: 559,959.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,273.86 : 1,028,496.42 = 405,760.74 : x
  2. Step 2: Convert to fraction form
    745,273.86/1,028,496.42 = 405,760.74/x
  3. Step 3: Cross multiply
    745,273.86x = 1,028,496.42 × 405,760.74
  4. Step 4: Simplify right side
    745,273.86x = 417,323,468,466.55
  5. Step 5: Solve for x
    x = 417,323,468,466.55/745,273.86
  6. Step 6: Final answer
    x = 559,959.89

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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.