Home / 831,639.87-1,147,657.46-469,066.68

Finding the Fourth Proportional to 831,639.87, 1,147,657.46 and 469,066.68

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Solution

The fourth proportional to 831,639.87, 1,147,657.46 and 469,066.68 is: 647,308.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,639.87 : 1,147,657.46 = 469,066.68 : x
  2. Step 2: Convert to fraction form
    831,639.87/1,147,657.46 = 469,066.68/x
  3. Step 3: Cross multiply
    831,639.87x = 1,147,657.46 × 469,066.68
  4. Step 4: Simplify right side
    831,639.87x = 538,327,872,194.10
  5. Step 5: Solve for x
    x = 538,327,872,194.10/831,639.87
  6. Step 6: Final answer
    x = 647,308.88

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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.