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Finding the Fourth Proportional to 655,450.31, 904,538.54 and 368,980.85

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Solution

The fourth proportional to 655,450.31, 904,538.54 and 368,980.85 is: 509,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,450.31 : 904,538.54 = 368,980.85 : x
  2. Step 2: Convert to fraction form
    655,450.31/904,538.54 = 368,980.85/x
  3. Step 3: Cross multiply
    655,450.31x = 904,538.54 × 368,980.85
  4. Step 4: Simplify right side
    655,450.31x = 333,757,397,502.06
  5. Step 5: Solve for x
    x = 333,757,397,502.06/655,450.31
  6. Step 6: Final answer
    x = 509,203.20

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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.