Home / 831,089.28-1,245,649.56-381,431.28

Finding the Fourth Proportional to 831,089.28, 1,245,649.56 and 381,431.28

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Solution

The fourth proportional to 831,089.28, 1,245,649.56 and 381,431.28 is: 571,695.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,089.28 : 1,245,649.56 = 381,431.28 : x
  2. Step 2: Convert to fraction form
    831,089.28/1,245,649.56 = 381,431.28/x
  3. Step 3: Cross multiply
    831,089.28x = 1,245,649.56 × 381,431.28
  4. Step 4: Simplify right side
    831,089.28x = 475,129,706,102.24
  5. Step 5: Solve for x
    x = 475,129,706,102.24/831,089.28
  6. Step 6: Final answer
    x = 571,695.14

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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.