Home / 831,959.20-1,148,103.78-449,986

Finding the Fourth Proportional to 831,959.20, 1,148,103.78 and 449,986

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Solution

The fourth proportional to 831,959.20, 1,148,103.78 and 449,986 is: 620,980.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,959.20 : 1,148,103.78 = 449,986 : x
  2. Step 2: Convert to fraction form
    831,959.20/1,148,103.78 = 449,986/x
  3. Step 3: Cross multiply
    831,959.20x = 1,148,103.78 × 449,986
  4. Step 4: Simplify right side
    831,959.20x = 516,630,627,547.08
  5. Step 5: Solve for x
    x = 516,630,627,547.08/831,959.20
  6. Step 6: Final answer
    x = 620,980.73

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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.