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Finding the Fourth Proportional to 655,760.21, 904,995.38 and 365,391

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Solution

The fourth proportional to 655,760.21, 904,995.38 and 365,391 is: 504,265.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,760.21 : 904,995.38 = 365,391 : x
  2. Step 2: Convert to fraction form
    655,760.21/904,995.38 = 365,391/x
  3. Step 3: Cross multiply
    655,760.21x = 904,995.38 × 365,391
  4. Step 4: Simplify right side
    655,760.21x = 330,677,167,807.06
  5. Step 5: Solve for x
    x = 330,677,167,807.06/655,760.21
  6. Step 6: Final answer
    x = 504,265.38

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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.