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Finding the Fourth Proportional to 907,272, 1,360,514.88 and 276,039.36

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Solution

The fourth proportional to 907,272, 1,360,514.88 and 276,039.36 is: 413,939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,272 : 1,360,514.88 = 276,039.36 : x
  2. Step 2: Convert to fraction form
    907,272/1,360,514.88 = 276,039.36/x
  3. Step 3: Cross multiply
    907,272x = 1,360,514.88 × 276,039.36
  4. Step 4: Simplify right side
    907,272x = 375,555,656,745.68
  5. Step 5: Solve for x
    x = 375,555,656,745.68/907,272
  6. Step 6: Final answer
    x = 413,939.43

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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.