Home / 745,651.72-1,028,999.19-406,119.97

Finding the Fourth Proportional to 745,651.72, 1,028,999.19 and 406,119.97

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Solution

The fourth proportional to 745,651.72, 1,028,999.19 and 406,119.97 is: 560,445.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,651.72 : 1,028,999.19 = 406,119.97 : x
  2. Step 2: Convert to fraction form
    745,651.72/1,028,999.19 = 406,119.97/x
  3. Step 3: Cross multiply
    745,651.72x = 1,028,999.19 × 406,119.97
  4. Step 4: Simplify right side
    745,651.72x = 417,897,120,172.82
  5. Step 5: Solve for x
    x = 417,897,120,172.82/745,651.72
  6. Step 6: Final answer
    x = 560,445.46

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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.