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Finding the Fourth Proportional to 485,117.79, 726,789.97 and 351,667.05

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Solution

The fourth proportional to 485,117.79, 726,789.97 and 351,667.05 is: 526,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,117.79 : 726,789.97 = 351,667.05 : x
  2. Step 2: Convert to fraction form
    485,117.79/726,789.97 = 351,667.05/x
  3. Step 3: Cross multiply
    485,117.79x = 726,789.97 × 351,667.05
  4. Step 4: Simplify right side
    485,117.79x = 255,588,084,719.49
  5. Step 5: Solve for x
    x = 255,588,084,719.49/485,117.79
  6. Step 6: Final answer
    x = 526,857.79

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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.