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Finding the Fourth Proportional to 873,755.73, 1,311,104.43 and 368,666.78

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Solution

The fourth proportional to 873,755.73, 1,311,104.43 and 368,666.78 is: 553,198.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,755.73 : 1,311,104.43 = 368,666.78 : x
  2. Step 2: Convert to fraction form
    873,755.73/1,311,104.43 = 368,666.78/x
  3. Step 3: Cross multiply
    873,755.73x = 1,311,104.43 × 368,666.78
  4. Step 4: Simplify right side
    873,755.73x = 483,360,641,896.31
  5. Step 5: Solve for x
    x = 483,360,641,896.31/873,755.73
  6. Step 6: Final answer
    x = 553,198.82

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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.