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Finding the Fourth Proportional to 1,208,981.80, 1,814,784.90 and 943,917.40

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Solution

The fourth proportional to 1,208,981.80, 1,814,784.90 and 943,917.40 is: 1,416,900.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,981.80 : 1,814,784.90 = 943,917.40 : x
  2. Step 2: Convert to fraction form
    1,208,981.80/1,814,784.90 = 943,917.40/x
  3. Step 3: Cross multiply
    1,208,981.80x = 1,814,784.90 × 943,917.40
  4. Step 4: Simplify right side
    1,208,981.80x = 1,713,007,044,367.26
  5. Step 5: Solve for x
    x = 1,713,007,044,367.26/1,208,981.80
  6. Step 6: Final answer
    x = 1,416,900.61

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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.