Home / 806,005.38-1,112,287.40-443,421.44

Finding the Fourth Proportional to 806,005.38, 1,112,287.40 and 443,421.44

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Solution

The fourth proportional to 806,005.38, 1,112,287.40 and 443,421.44 is: 611,921.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,005.38 : 1,112,287.40 = 443,421.44 : x
  2. Step 2: Convert to fraction form
    806,005.38/1,112,287.40 = 443,421.44/x
  3. Step 3: Cross multiply
    806,005.38x = 1,112,287.40 × 443,421.44
  4. Step 4: Simplify right side
    806,005.38x = 493,212,080,601.86
  5. Step 5: Solve for x
    x = 493,212,080,601.86/806,005.38
  6. Step 6: Final answer
    x = 611,921.57

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1.5x scale

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.