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Finding the Fourth Proportional to 626,308.12, 864,529.40 and 371,659.32

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Solution

The fourth proportional to 626,308.12, 864,529.40 and 371,659.32 is: 513,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,308.12 : 864,529.40 = 371,659.32 : x
  2. Step 2: Convert to fraction form
    626,308.12/864,529.40 = 371,659.32/x
  3. Step 3: Cross multiply
    626,308.12x = 864,529.40 × 371,659.32
  4. Step 4: Simplify right side
    626,308.12x = 321,310,408,924.01
  5. Step 5: Solve for x
    x = 321,310,408,924.01/626,308.12
  6. Step 6: Final answer
    x = 513,022.90

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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.