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Finding the Fourth Proportional to 489,349.98, 733,655.65 and 320,912.71

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Solution

The fourth proportional to 489,349.98, 733,655.65 and 320,912.71 is: 481,126.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,349.98 : 733,655.65 = 320,912.71 : x
  2. Step 2: Convert to fraction form
    489,349.98/733,655.65 = 320,912.71/x
  3. Step 3: Cross multiply
    489,349.98x = 733,655.65 × 320,912.71
  4. Step 4: Simplify right side
    489,349.98x = 235,439,423,779.58
  5. Step 5: Solve for x
    x = 235,439,423,779.58/489,349.98
  6. Step 6: Final answer
    x = 481,126.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.