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Finding the Fourth Proportional to 916,796.79, 1,375,476.74 and 437,636.03

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Solution

The fourth proportional to 916,796.79, 1,375,476.74 and 437,636.03 is: 656,588.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,796.79 : 1,375,476.74 = 437,636.03 : x
  2. Step 2: Convert to fraction form
    916,796.79/1,375,476.74 = 437,636.03/x
  3. Step 3: Cross multiply
    916,796.79x = 1,375,476.74 × 437,636.03
  4. Step 4: Simplify right side
    916,796.79x = 601,958,170,785.38
  5. Step 5: Solve for x
    x = 601,958,170,785.38/916,796.79
  6. Step 6: Final answer
    x = 656,588.44

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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.