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Finding the Fourth Proportional to 626,412.72, 864,442.08 and 339,930.48

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Solution

The fourth proportional to 626,412.72, 864,442.08 and 339,930.48 is: 469,100.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,412.72 : 864,442.08 = 339,930.48 : x
  2. Step 2: Convert to fraction form
    626,412.72/864,442.08 = 339,930.48/x
  3. Step 3: Cross multiply
    626,412.72x = 864,442.08 × 339,930.48
  4. Step 4: Simplify right side
    626,412.72x = 293,850,211,186.60
  5. Step 5: Solve for x
    x = 293,850,211,186.60/626,412.72
  6. Step 6: Final answer
    x = 469,100.01

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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.