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Finding the Fourth Proportional to 499,588.47, 689,415.03 and 284,797.73

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Solution

The fourth proportional to 499,588.47, 689,415.03 and 284,797.73 is: 393,011.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,588.47 : 689,415.03 = 284,797.73 : x
  2. Step 2: Convert to fraction form
    499,588.47/689,415.03 = 284,797.73/x
  3. Step 3: Cross multiply
    499,588.47x = 689,415.03 × 284,797.73
  4. Step 4: Simplify right side
    499,588.47x = 196,343,837,295.42
  5. Step 5: Solve for x
    x = 196,343,837,295.42/499,588.47
  6. Step 6: Final answer
    x = 393,011.15

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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.