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Finding the Fourth Proportional to 655,540.80, 904,663.32 and 369,071.22

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Solution

The fourth proportional to 655,540.80, 904,663.32 and 369,071.22 is: 509,327.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,540.80 : 904,663.32 = 369,071.22 : x
  2. Step 2: Convert to fraction form
    655,540.80/904,663.32 = 369,071.22/x
  3. Step 3: Cross multiply
    655,540.80x = 904,663.32 × 369,071.22
  4. Step 4: Simplify right side
    655,540.80x = 333,885,195,201.65
  5. Step 5: Solve for x
    x = 333,885,195,201.65/655,540.80
  6. Step 6: Final answer
    x = 509,327.86

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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.