Home / 810,468.48-1,215,703.38-211,428.96

Finding the Fourth Proportional to 810,468.48, 1,215,703.38 and 211,428.96

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Solution

The fourth proportional to 810,468.48, 1,215,703.38 and 211,428.96 is: 317,143.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,468.48 : 1,215,703.38 = 211,428.96 : x
  2. Step 2: Convert to fraction form
    810,468.48/1,215,703.38 = 211,428.96/x
  3. Step 3: Cross multiply
    810,468.48x = 1,215,703.38 × 211,428.96
  4. Step 4: Simplify right side
    810,468.48x = 257,034,901,301.89
  5. Step 5: Solve for x
    x = 257,034,901,301.89/810,468.48
  6. Step 6: Final answer
    x = 317,143.61

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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.