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Finding the Fourth Proportional to 28,964,980.80, 43,335,496.80 and 18,887,284.80

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Solution

The fourth proportional to 28,964,980.80, 43,335,496.80 and 18,887,284.80 is: 28,257,911.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,964,980.80 : 43,335,496.80 = 18,887,284.80 : x
  2. Step 2: Convert to fraction form
    28,964,980.80/43,335,496.80 = 18,887,284.80/x
  3. Step 3: Cross multiply
    28,964,980.80x = 43,335,496.80 × 18,887,284.80
  4. Step 4: Simplify right side
    28,964,980.80x = 818,489,870,011,088.62
  5. Step 5: Solve for x
    x = 818,489,870,011,088.62/28,964,980.80
  6. Step 6: Final answer
    x = 28,257,911.71

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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.