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Finding the Fourth Proportional to 612,081.93, 844,656.24 and 340,142.85

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Solution

The fourth proportional to 612,081.93, 844,656.24 and 340,142.85 is: 469,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,081.93 : 844,656.24 = 340,142.85 : x
  2. Step 2: Convert to fraction form
    612,081.93/844,656.24 = 340,142.85/x
  3. Step 3: Cross multiply
    612,081.93x = 844,656.24 × 340,142.85
  4. Step 4: Simplify right side
    612,081.93x = 287,303,780,743.88
  5. Step 5: Solve for x
    x = 287,303,780,743.88/612,081.93
  6. Step 6: Final answer
    x = 469,387.78

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1.5x scale

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.