Home / 728,243.34-1,089,565.65-443,882.31

Finding the Fourth Proportional to 728,243.34, 1,089,565.65 and 443,882.31

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Solution

The fourth proportional to 728,243.34, 1,089,565.65 and 443,882.31 is: 664,117.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,243.34 : 1,089,565.65 = 443,882.31 : x
  2. Step 2: Convert to fraction form
    728,243.34/1,089,565.65 = 443,882.31/x
  3. Step 3: Cross multiply
    728,243.34x = 1,089,565.65 × 443,882.31
  4. Step 4: Simplify right side
    728,243.34x = 483,638,917,618.65
  5. Step 5: Solve for x
    x = 483,638,917,618.65/728,243.34
  6. Step 6: Final answer
    x = 664,117.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.