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Finding the Fourth Proportional to 694,425.60, 958,302.72 and 392,620.80

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Solution

The fourth proportional to 694,425.60, 958,302.72 and 392,620.80 is: 541,814.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,425.60 : 958,302.72 = 392,620.80 : x
  2. Step 2: Convert to fraction form
    694,425.60/958,302.72 = 392,620.80/x
  3. Step 3: Cross multiply
    694,425.60x = 958,302.72 × 392,620.80
  4. Step 4: Simplify right side
    694,425.60x = 376,249,580,568.58
  5. Step 5: Solve for x
    x = 376,249,580,568.58/694,425.60
  6. Step 6: Final answer
    x = 541,814.10

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1.5x scale

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.