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Finding the Fourth Proportional to 499,744.89, 689,664.25 and 273,390.39

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Solution

The fourth proportional to 499,744.89, 689,664.25 and 273,390.39 is: 377,287.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,744.89 : 689,664.25 = 273,390.39 : x
  2. Step 2: Convert to fraction form
    499,744.89/689,664.25 = 273,390.39/x
  3. Step 3: Cross multiply
    499,744.89x = 689,664.25 × 273,390.39
  4. Step 4: Simplify right side
    499,744.89x = 188,547,577,593.08
  5. Step 5: Solve for x
    x = 188,547,577,593.08/499,744.89
  6. Step 6: Final answer
    x = 377,287.65

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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.