Home / 841,905.78-1,263,356.97-309,800.48

Finding the Fourth Proportional to 841,905.78, 1,263,356.97 and 309,800.48

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Solution

The fourth proportional to 841,905.78, 1,263,356.97 and 309,800.48 is: 464,884.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    841,905.78 : 1,263,356.97 = 309,800.48 : x
  2. Step 2: Convert to fraction form
    841,905.78/1,263,356.97 = 309,800.48/x
  3. Step 3: Cross multiply
    841,905.78x = 1,263,356.97 × 309,800.48
  4. Step 4: Simplify right side
    841,905.78x = 391,388,595,299.90
  5. Step 5: Solve for x
    x = 391,388,595,299.90/841,905.78
  6. Step 6: Final answer
    x = 464,884.08

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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.