Home / 831,891.78-1,148,005.17-449,917.38

Finding the Fourth Proportional to 831,891.78, 1,148,005.17 and 449,917.38

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Solution

The fourth proportional to 831,891.78, 1,148,005.17 and 449,917.38 is: 620,883.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,891.78 : 1,148,005.17 = 449,917.38 : x
  2. Step 2: Convert to fraction form
    831,891.78/1,148,005.17 = 449,917.38/x
  3. Step 3: Cross multiply
    831,891.78x = 1,148,005.17 × 449,917.38
  4. Step 4: Simplify right side
    831,891.78x = 516,507,478,312.86
  5. Step 5: Solve for x
    x = 516,507,478,312.86/831,891.78
  6. Step 6: Final answer
    x = 620,883.02

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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.