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Finding the Fourth Proportional to 801,897, 1,106,617.47 and 479,607.09

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Solution

The fourth proportional to 801,897, 1,106,617.47 and 479,607.09 is: 661,857.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,897 : 1,106,617.47 = 479,607.09 : x
  2. Step 2: Convert to fraction form
    801,897/1,106,617.47 = 479,607.09/x
  3. Step 3: Cross multiply
    801,897x = 1,106,617.47 × 479,607.09
  4. Step 4: Simplify right side
    801,897x = 530,741,584,529.86
  5. Step 5: Solve for x
    x = 530,741,584,529.86/801,897
  6. Step 6: Final answer
    x = 661,857.55

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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.