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Finding the Fourth Proportional to 611,700, 917,044.81 and 269,900.07

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Solution

The fourth proportional to 611,700, 917,044.81 and 269,900.07 is: 404,627.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,700 : 917,044.81 = 269,900.07 : x
  2. Step 2: Convert to fraction form
    611,700/917,044.81 = 269,900.07/x
  3. Step 3: Cross multiply
    611,700x = 917,044.81 × 269,900.07
  4. Step 4: Simplify right side
    611,700x = 247,510,458,412.14
  5. Step 5: Solve for x
    x = 247,510,458,412.14/611,700
  6. Step 6: Final answer
    x = 404,627.20

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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.