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Finding the Fourth Proportional to 654,687.32, 903,883.59 and 448,301.09

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Solution

The fourth proportional to 654,687.32, 903,883.59 and 448,301.09 is: 618,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,687.32 : 903,883.59 = 448,301.09 : x
  2. Step 2: Convert to fraction form
    654,687.32/903,883.59 = 448,301.09/x
  3. Step 3: Cross multiply
    654,687.32x = 903,883.59 × 448,301.09
  4. Step 4: Simplify right side
    654,687.32x = 405,211,994,110.70
  5. Step 5: Solve for x
    x = 405,211,994,110.70/654,687.32
  6. Step 6: Final answer
    x = 618,939.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.