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Finding the Fourth Proportional to 874,395.14, 1,311,029.31 and 368,820.88

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Solution

The fourth proportional to 874,395.14, 1,311,029.31 and 368,820.88 is: 552,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,395.14 : 1,311,029.31 = 368,820.88 : x
  2. Step 2: Convert to fraction form
    874,395.14/1,311,029.31 = 368,820.88/x
  3. Step 3: Cross multiply
    874,395.14x = 1,311,029.31 × 368,820.88
  4. Step 4: Simplify right side
    874,395.14x = 483,534,981,925.50
  5. Step 5: Solve for x
    x = 483,534,981,925.50/874,395.14
  6. Step 6: Final answer
    x = 552,993.68

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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.