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Finding the Fourth Proportional to 8,506,756.80, 12,761,301.60 and 2,826,388.80

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Solution

The fourth proportional to 8,506,756.80, 12,761,301.60 and 2,826,388.80 is: 4,239,970.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,506,756.80 : 12,761,301.60 = 2,826,388.80 : x
  2. Step 2: Convert to fraction form
    8,506,756.80/12,761,301.60 = 2,826,388.80/x
  3. Step 3: Cross multiply
    8,506,756.80x = 12,761,301.60 × 2,826,388.80
  4. Step 4: Simplify right side
    8,506,756.80x = 36,068,399,915,662.08
  5. Step 5: Solve for x
    x = 36,068,399,915,662.08/8,506,756.80
  6. Step 6: Final answer
    x = 4,239,970.74

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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.