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Finding the Fourth Proportional to 626,434.32, 864,479.88 and 339,954.41

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Solution

The fourth proportional to 626,434.32, 864,479.88 and 339,954.41 is: 469,137.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,434.32 : 864,479.88 = 339,954.41 : x
  2. Step 2: Convert to fraction form
    626,434.32/864,479.88 = 339,954.41/x
  3. Step 3: Cross multiply
    626,434.32x = 864,479.88 × 339,954.41
  4. Step 4: Simplify right side
    626,434.32x = 293,883,743,239.87
  5. Step 5: Solve for x
    x = 293,883,743,239.87/626,434.32
  6. Step 6: Final answer
    x = 469,137.36

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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.