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Finding the Fourth Proportional to 8,361,934.80, 12,539,791.80 and 3,312,200.40

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Solution

The fourth proportional to 8,361,934.80, 12,539,791.80 and 3,312,200.40 is: 4,967,068.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361,934.80 : 12,539,791.80 = 3,312,200.40 : x
  2. Step 2: Convert to fraction form
    8,361,934.80/12,539,791.80 = 3,312,200.40/x
  3. Step 3: Cross multiply
    8,361,934.80x = 12,539,791.80 × 3,312,200.40
  4. Step 4: Simplify right side
    8,361,934.80x = 41,534,303,415,876.72
  5. Step 5: Solve for x
    x = 41,534,303,415,876.72/8,361,934.80
  6. Step 6: Final answer
    x = 4,967,068.56

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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.