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Finding the Fourth Proportional to 407,828.20, 611,742.30 and 401,923.30

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Solution

The fourth proportional to 407,828.20, 611,742.30 and 401,923.30 is: 602,884.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,828.20 : 611,742.30 = 401,923.30 : x
  2. Step 2: Convert to fraction form
    407,828.20/611,742.30 = 401,923.30/x
  3. Step 3: Cross multiply
    407,828.20x = 611,742.30 × 401,923.30
  4. Step 4: Simplify right side
    407,828.20x = 245,873,483,965.59
  5. Step 5: Solve for x
    x = 245,873,483,965.59/407,828.20
  6. Step 6: Final answer
    x = 602,884.95

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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.