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Finding the Fourth Proportional to 655,372.71, 904,416.44 and 368,897.31

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Solution

The fourth proportional to 655,372.71, 904,416.44 and 368,897.31 is: 509,079.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,372.71 : 904,416.44 = 368,897.31 : x
  2. Step 2: Convert to fraction form
    655,372.71/904,416.44 = 368,897.31/x
  3. Step 3: Cross multiply
    655,372.71x = 904,416.44 × 368,897.31
  4. Step 4: Simplify right side
    655,372.71x = 333,636,789,991.29
  5. Step 5: Solve for x
    x = 333,636,789,991.29/655,372.71
  6. Step 6: Final answer
    x = 509,079.47

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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.