Home / 728,242.84-1,089,564.90-443,881.81

Finding the Fourth Proportional to 728,242.84, 1,089,564.90 and 443,881.81

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Solution

The fourth proportional to 728,242.84, 1,089,564.90 and 443,881.81 is: 664,116.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,242.84 : 1,089,564.90 = 443,881.81 : x
  2. Step 2: Convert to fraction form
    728,242.84/1,089,564.90 = 443,881.81/x
  3. Step 3: Cross multiply
    728,242.84x = 1,089,564.90 × 443,881.81
  4. Step 4: Simplify right side
    728,242.84x = 483,638,039,924.47
  5. Step 5: Solve for x
    x = 483,638,039,924.47/728,242.84
  6. Step 6: Final answer
    x = 664,116.44

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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.