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Finding the Fourth Proportional to 515,078.40, 772,945.65 and 301,845.90

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Solution

The fourth proportional to 515,078.40, 772,945.65 and 301,845.90 is: 452,961.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,078.40 : 772,945.65 = 301,845.90 : x
  2. Step 2: Convert to fraction form
    515,078.40/772,945.65 = 301,845.90/x
  3. Step 3: Cross multiply
    515,078.40x = 772,945.65 × 301,845.90
  4. Step 4: Simplify right side
    515,078.40x = 233,310,475,375.34
  5. Step 5: Solve for x
    x = 233,310,475,375.34/515,078.40
  6. Step 6: Final answer
    x = 452,961.09

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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.