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Finding the Fourth Proportional to 479,486.40, 717,962.40 and 384,273.60

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Solution

The fourth proportional to 479,486.40, 717,962.40 and 384,273.60 is: 575,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,486.40 : 717,962.40 = 384,273.60 : x
  2. Step 2: Convert to fraction form
    479,486.40/717,962.40 = 384,273.60/x
  3. Step 3: Cross multiply
    479,486.40x = 717,962.40 × 384,273.60
  4. Step 4: Simplify right side
    479,486.40x = 275,893,996,112.64
  5. Step 5: Solve for x
    x = 275,893,996,112.64/479,486.40
  6. Step 6: Final answer
    x = 575,394.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.