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Finding the Fourth Proportional to 664,838.01, 996,567.30 and 309,559.86

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Solution

The fourth proportional to 664,838.01, 996,567.30 and 309,559.86 is: 464,018.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,838.01 : 996,567.30 = 309,559.86 : x
  2. Step 2: Convert to fraction form
    664,838.01/996,567.30 = 309,559.86/x
  3. Step 3: Cross multiply
    664,838.01x = 996,567.30 × 309,559.86
  4. Step 4: Simplify right side
    664,838.01x = 308,497,233,868.58
  5. Step 5: Solve for x
    x = 308,497,233,868.58/664,838.01
  6. Step 6: Final answer
    x = 464,018.65

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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.