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Finding the Fourth Proportional to 408,054.15, 612,081.23 and 404,117.55

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Solution

The fourth proportional to 408,054.15, 612,081.23 and 404,117.55 is: 606,176.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,054.15 : 612,081.23 = 404,117.55 : x
  2. Step 2: Convert to fraction form
    408,054.15/612,081.23 = 404,117.55/x
  3. Step 3: Cross multiply
    408,054.15x = 612,081.23 × 404,117.55
  4. Step 4: Simplify right side
    408,054.15x = 247,352,767,068.59
  5. Step 5: Solve for x
    x = 247,352,767,068.59/408,054.15
  6. Step 6: Final answer
    x = 606,176.33

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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.