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Finding the Fourth Proportional to 626,080.91, 863,991.72 and 354,142.98

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Solution

The fourth proportional to 626,080.91, 863,991.72 and 354,142.98 is: 488,717.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,080.91 : 863,991.72 = 354,142.98 : x
  2. Step 2: Convert to fraction form
    626,080.91/863,991.72 = 354,142.98/x
  3. Step 3: Cross multiply
    626,080.91x = 863,991.72 × 354,142.98
  4. Step 4: Simplify right side
    626,080.91x = 305,976,602,416.13
  5. Step 5: Solve for x
    x = 305,976,602,416.13/626,080.91
  6. Step 6: Final answer
    x = 488,717.35

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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.