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Finding the Fourth Proportional to 504,778.43, 696,545.83 and 278,409.35

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Solution

The fourth proportional to 504,778.43, 696,545.83 and 278,409.35 is: 384,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,778.43 : 696,545.83 = 278,409.35 : x
  2. Step 2: Convert to fraction form
    504,778.43/696,545.83 = 278,409.35/x
  3. Step 3: Cross multiply
    504,778.43x = 696,545.83 × 278,409.35
  4. Step 4: Simplify right side
    504,778.43x = 193,924,873,864.89
  5. Step 5: Solve for x
    x = 193,924,873,864.89/504,778.43
  6. Step 6: Final answer
    x = 384,178.21

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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.