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Finding the Fourth Proportional to 504,898.72, 696,725.76 and 278,548

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Solution

The fourth proportional to 504,898.72, 696,725.76 and 278,548 is: 384,377.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,898.72 : 696,725.76 = 278,548 : x
  2. Step 2: Convert to fraction form
    504,898.72/696,725.76 = 278,548/x
  3. Step 3: Cross multiply
    504,898.72x = 696,725.76 × 278,548
  4. Step 4: Simplify right side
    504,898.72x = 194,071,566,996.48
  5. Step 5: Solve for x
    x = 194,071,566,996.48/504,898.72
  6. Step 6: Final answer
    x = 384,377.22

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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.