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Finding the Fourth Proportional to 626,493.69, 864,556.20 and 340,013.90

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Solution

The fourth proportional to 626,493.69, 864,556.20 and 340,013.90 is: 469,216.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,493.69 : 864,556.20 = 340,013.90 : x
  2. Step 2: Convert to fraction form
    626,493.69/864,556.20 = 340,013.90/x
  3. Step 3: Cross multiply
    626,493.69x = 864,556.20 × 340,013.90
  4. Step 4: Simplify right side
    626,493.69x = 293,961,127,492.57
  5. Step 5: Solve for x
    x = 293,961,127,492.57/626,493.69
  6. Step 6: Final answer
    x = 469,216.42

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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.