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Finding the Fourth Proportional to 499,860.92, 689,090.54 and 356,371.85

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Solution

The fourth proportional to 499,860.92, 689,090.54 and 356,371.85 is: 491,281.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,860.92 : 689,090.54 = 356,371.85 : x
  2. Step 2: Convert to fraction form
    499,860.92/689,090.54 = 356,371.85/x
  3. Step 3: Cross multiply
    499,860.92x = 689,090.54 × 356,371.85
  4. Step 4: Simplify right side
    499,860.92x = 245,572,465,329.99
  5. Step 5: Solve for x
    x = 245,572,465,329.99/499,860.92
  6. Step 6: Final answer
    x = 491,281.59

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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.