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Finding the Fourth Proportional to 501,428.40, 751,435.40 and 276,889.92

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Solution

The fourth proportional to 501,428.40, 751,435.40 and 276,889.92 is: 414,944.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,428.40 : 751,435.40 = 276,889.92 : x
  2. Step 2: Convert to fraction form
    501,428.40/751,435.40 = 276,889.92/x
  3. Step 3: Cross multiply
    501,428.40x = 751,435.40 × 276,889.92
  4. Step 4: Simplify right side
    501,428.40x = 208,064,887,791.17
  5. Step 5: Solve for x
    x = 208,064,887,791.17/501,428.40
  6. Step 6: Final answer
    x = 414,944.36

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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.