Home / 510,856.40-764,972.40-405,005.60

Finding the Fourth Proportional to 510,856.40, 764,972.40 and 405,005.60

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Solution

The fourth proportional to 510,856.40, 764,972.40 and 405,005.60 is: 606,468.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,856.40 : 764,972.40 = 405,005.60 : x
  2. Step 2: Convert to fraction form
    510,856.40/764,972.40 = 405,005.60/x
  3. Step 3: Cross multiply
    510,856.40x = 764,972.40 × 405,005.60
  4. Step 4: Simplify right side
    510,856.40x = 309,818,105,845.44
  5. Step 5: Solve for x
    x = 309,818,105,845.44/510,856.40
  6. Step 6: Final answer
    x = 606,468.09

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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.