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Finding the Fourth Proportional to 481,011.59, 664,000.45 and 299,813.78

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Solution

The fourth proportional to 481,011.59, 664,000.45 and 299,813.78 is: 413,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,011.59 : 664,000.45 = 299,813.78 : x
  2. Step 2: Convert to fraction form
    481,011.59/664,000.45 = 299,813.78/x
  3. Step 3: Cross multiply
    481,011.59x = 664,000.45 × 299,813.78
  4. Step 4: Simplify right side
    481,011.59x = 199,076,480,766.66
  5. Step 5: Solve for x
    x = 199,076,480,766.66/481,011.59
  6. Step 6: Final answer
    x = 413,870.45

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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.