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Finding the Fourth Proportional to 455,907.79, 629,182.55 and 302,706.15

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Solution

The fourth proportional to 455,907.79, 629,182.55 and 302,706.15 is: 417,754.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,907.79 : 629,182.55 = 302,706.15 : x
  2. Step 2: Convert to fraction form
    455,907.79/629,182.55 = 302,706.15/x
  3. Step 3: Cross multiply
    455,907.79x = 629,182.55 × 302,706.15
  4. Step 4: Simplify right side
    455,907.79x = 190,457,425,755.01
  5. Step 5: Solve for x
    x = 190,457,425,755.01/455,907.79
  6. Step 6: Final answer
    x = 417,754.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.