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Finding the Fourth Proportional to 499,774.78, 689,689.65 and 273,420.28

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Solution

The fourth proportional to 499,774.78, 689,689.65 and 273,420.28 is: 377,320.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,774.78 : 689,689.65 = 273,420.28 : x
  2. Step 2: Convert to fraction form
    499,774.78/689,689.65 = 273,420.28/x
  3. Step 3: Cross multiply
    499,774.78x = 689,689.65 × 273,420.28
  4. Step 4: Simplify right side
    499,774.78x = 188,575,139,103.54
  5. Step 5: Solve for x
    x = 188,575,139,103.54/499,774.78
  6. Step 6: Final answer
    x = 377,320.24

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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.