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Finding the Fourth Proportional to 626,556.42, 864,648.86 and 340,076.64

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Solution

The fourth proportional to 626,556.42, 864,648.86 and 340,076.64 is: 469,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,556.42 : 864,648.86 = 340,076.64 : x
  2. Step 2: Convert to fraction form
    626,556.42/864,648.86 = 340,076.64/x
  3. Step 3: Cross multiply
    626,556.42x = 864,648.86 × 340,076.64
  4. Step 4: Simplify right side
    626,556.42x = 294,046,879,088.63
  5. Step 5: Solve for x
    x = 294,046,879,088.63/626,556.42
  6. Step 6: Final answer
    x = 469,306.31

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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.