Home / 810,268.38-1,215,665.01-389,489.58

Finding the Fourth Proportional to 810,268.38, 1,215,665.01 and 389,489.58

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Solution

The fourth proportional to 810,268.38, 1,215,665.01 and 389,489.58 is: 584,360.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,268.38 : 1,215,665.01 = 389,489.58 : x
  2. Step 2: Convert to fraction form
    810,268.38/1,215,665.01 = 389,489.58/x
  3. Step 3: Cross multiply
    810,268.38x = 1,215,665.01 × 389,489.58
  4. Step 4: Simplify right side
    810,268.38x = 473,488,854,165.60
  5. Step 5: Solve for x
    x = 473,488,854,165.60/810,268.38
  6. Step 6: Final answer
    x = 584,360.52

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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.