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Finding the Fourth Proportional to 664,007.60, 994,699.20 and 363,951.20

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Solution

The fourth proportional to 664,007.60, 994,699.20 and 363,951.20 is: 545,207.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,007.60 : 994,699.20 = 363,951.20 : x
  2. Step 2: Convert to fraction form
    664,007.60/994,699.20 = 363,951.20/x
  3. Step 3: Cross multiply
    664,007.60x = 994,699.20 × 363,951.20
  4. Step 4: Simplify right side
    664,007.60x = 362,021,967,479.04
  5. Step 5: Solve for x
    x = 362,021,967,479.04/664,007.60
  6. Step 6: Final answer
    x = 545,207.57

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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.