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Finding the Fourth Proportional to 414,179.81, 620,359.07 and 342,287.66

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Solution

The fourth proportional to 414,179.81, 620,359.07 and 342,287.66 is: 512,678.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,179.81 : 620,359.07 = 342,287.66 : x
  2. Step 2: Convert to fraction form
    414,179.81/620,359.07 = 342,287.66/x
  3. Step 3: Cross multiply
    414,179.81x = 620,359.07 × 342,287.66
  4. Step 4: Simplify right side
    414,179.81x = 212,341,249,616.84
  5. Step 5: Solve for x
    x = 212,341,249,616.84/414,179.81
  6. Step 6: Final answer
    x = 512,678.91

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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.