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Finding the Fourth Proportional to 626,509.89, 864,584.49 and 340,029.98

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Solution

The fourth proportional to 626,509.89, 864,584.49 and 340,029.98 is: 469,241.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,509.89 : 864,584.49 = 340,029.98 : x
  2. Step 2: Convert to fraction form
    626,509.89/864,584.49 = 340,029.98/x
  3. Step 3: Cross multiply
    626,509.89x = 864,584.49 × 340,029.98
  4. Step 4: Simplify right side
    626,509.89x = 293,984,642,932.16
  5. Step 5: Solve for x
    x = 293,984,642,932.16/626,509.89
  6. Step 6: Final answer
    x = 469,241.82

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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.