Home / 400,716.18-551,873.25-309,736.98

Finding the Fourth Proportional to 400,716.18, 551,873.25 and 309,736.98

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Solution

The fourth proportional to 400,716.18, 551,873.25 and 309,736.98 is: 426,575.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,716.18 : 551,873.25 = 309,736.98 : x
  2. Step 2: Convert to fraction form
    400,716.18/551,873.25 = 309,736.98/x
  3. Step 3: Cross multiply
    400,716.18x = 551,873.25 × 309,736.98
  4. Step 4: Simplify right side
    400,716.18x = 170,935,553,797.79
  5. Step 5: Solve for x
    x = 170,935,553,797.79/400,716.18
  6. Step 6: Final answer
    x = 426,575.12

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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.