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Finding the Fourth Proportional to 504,789.76, 696,603 and 275,349.16

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Solution

The fourth proportional to 504,789.76, 696,603 and 275,349.16 is: 379,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,789.76 : 696,603 = 275,349.16 : x
  2. Step 2: Convert to fraction form
    504,789.76/696,603 = 275,349.16/x
  3. Step 3: Cross multiply
    504,789.76x = 696,603 × 275,349.16
  4. Step 4: Simplify right side
    504,789.76x = 191,809,050,903.48
  5. Step 5: Solve for x
    x = 191,809,050,903.48/504,789.76
  6. Step 6: Final answer
    x = 379,978.09

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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.