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Finding the Fourth Proportional to 8,746,640.80, 13,122,418.80 and 4,259,063.20

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Solution

The fourth proportional to 8,746,640.80, 13,122,418.80 and 4,259,063.20 is: 6,389,791.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,746,640.80 : 13,122,418.80 = 4,259,063.20 : x
  2. Step 2: Convert to fraction form
    8,746,640.80/13,122,418.80 = 4,259,063.20/x
  3. Step 3: Cross multiply
    8,746,640.80x = 13,122,418.80 × 4,259,063.20
  4. Step 4: Simplify right side
    8,746,640.80x = 55,889,211,006,068.16
  5. Step 5: Solve for x
    x = 55,889,211,006,068.16/8,746,640.80
  6. Step 6: Final answer
    x = 6,389,791.50

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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.