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Finding the Fourth Proportional to 655,266.72, 904,297.20 and 368,805.36

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Solution

The fourth proportional to 655,266.72, 904,297.20 and 368,805.36 is: 508,967.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,266.72 : 904,297.20 = 368,805.36 : x
  2. Step 2: Convert to fraction form
    655,266.72/904,297.20 = 368,805.36/x
  3. Step 3: Cross multiply
    655,266.72x = 904,297.20 × 368,805.36
  4. Step 4: Simplify right side
    655,266.72x = 333,509,654,392.99
  5. Step 5: Solve for x
    x = 333,509,654,392.99/655,266.72
  6. Step 6: Final answer
    x = 508,967.79

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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.