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Finding the Fourth Proportional to 407,716.60, 611,574.90 and 401,811.70

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Solution

The fourth proportional to 407,716.60, 611,574.90 and 401,811.70 is: 602,717.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,716.60 : 611,574.90 = 401,811.70 : x
  2. Step 2: Convert to fraction form
    407,716.60/611,574.90 = 401,811.70/x
  3. Step 3: Cross multiply
    407,716.60x = 611,574.90 × 401,811.70
  4. Step 4: Simplify right side
    407,716.60x = 245,737,950,246.33
  5. Step 5: Solve for x
    x = 245,737,950,246.33/407,716.60
  6. Step 6: Final answer
    x = 602,717.55

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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.