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Finding the Fourth Proportional to 7,870,714.80, 11,808,145.80 and 2,821,498.80

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Solution

The fourth proportional to 7,870,714.80, 11,808,145.80 and 2,821,498.80 is: 4,232,991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870,714.80 : 11,808,145.80 = 2,821,498.80 : x
  2. Step 2: Convert to fraction form
    7,870,714.80/11,808,145.80 = 2,821,498.80/x
  3. Step 3: Cross multiply
    7,870,714.80x = 11,808,145.80 × 2,821,498.80
  4. Step 4: Simplify right side
    7,870,714.80x = 33,316,669,204,925.04
  5. Step 5: Solve for x
    x = 33,316,669,204,925.04/7,870,714.80
  6. Step 6: Final answer
    x = 4,232,991.55

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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.