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Finding the Fourth Proportional to 571,717.91, 856,433.52 and 343,887.69

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Solution

The fourth proportional to 571,717.91, 856,433.52 and 343,887.69 is: 515,143.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,717.91 : 856,433.52 = 343,887.69 : x
  2. Step 2: Convert to fraction form
    571,717.91/856,433.52 = 343,887.69/x
  3. Step 3: Cross multiply
    571,717.91x = 856,433.52 × 343,887.69
  4. Step 4: Simplify right side
    571,717.91x = 294,516,948,043.00
  5. Step 5: Solve for x
    x = 294,516,948,043.00/571,717.91
  6. Step 6: Final answer
    x = 515,143.82

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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.