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Finding the Fourth Proportional to 874,402.88, 1,311,651.32 and 275,410.91

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Solution

The fourth proportional to 874,402.88, 1,311,651.32 and 275,410.91 is: 413,131.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,402.88 : 1,311,651.32 = 275,410.91 : x
  2. Step 2: Convert to fraction form
    874,402.88/1,311,651.32 = 275,410.91/x
  3. Step 3: Cross multiply
    874,402.88x = 1,311,651.32 × 275,410.91
  4. Step 4: Simplify right side
    874,402.88x = 361,243,075,708.59
  5. Step 5: Solve for x
    x = 361,243,075,708.59/874,402.88
  6. Step 6: Final answer
    x = 413,131.16

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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.