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Finding the Fourth Proportional to 802,814.34, 1,201,711.90 and 518,124.34

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Solution

The fourth proportional to 802,814.34, 1,201,711.90 and 518,124.34 is: 775,566.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,814.34 : 1,201,711.90 = 518,124.34 : x
  2. Step 2: Convert to fraction form
    802,814.34/1,201,711.90 = 518,124.34/x
  3. Step 3: Cross multiply
    802,814.34x = 1,201,711.90 × 518,124.34
  4. Step 4: Simplify right side
    802,814.34x = 622,636,185,057.65
  5. Step 5: Solve for x
    x = 622,636,185,057.65/802,814.34
  6. Step 6: Final answer
    x = 775,566.85

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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.