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Finding the Fourth Proportional to 456,866.98, 629,068.21 and 405,790.96

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Solution

The fourth proportional to 456,866.98, 629,068.21 and 405,790.96 is: 558,740.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,866.98 : 629,068.21 = 405,790.96 : x
  2. Step 2: Convert to fraction form
    456,866.98/629,068.21 = 405,790.96/x
  3. Step 3: Cross multiply
    456,866.98x = 629,068.21 × 405,790.96
  4. Step 4: Simplify right side
    456,866.98x = 255,270,192,841.38
  5. Step 5: Solve for x
    x = 255,270,192,841.38/456,866.98
  6. Step 6: Final answer
    x = 558,740.74

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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.