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Finding the Fourth Proportional to 1,661,121, 2,492,097.66 and 479,169

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Solution

The fourth proportional to 1,661,121, 2,492,097.66 and 479,169 is: 718,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661,121 : 2,492,097.66 = 479,169 : x
  2. Step 2: Convert to fraction form
    1,661,121/2,492,097.66 = 479,169/x
  3. Step 3: Cross multiply
    1,661,121x = 2,492,097.66 × 479,169
  4. Step 4: Simplify right side
    1,661,121x = 1,194,135,943,644.54
  5. Step 5: Solve for x
    x = 1,194,135,943,644.54/1,661,121
  6. Step 6: Final answer
    x = 718,873.55

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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.