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Finding the Fourth Proportional to 655,221.96, 904,056.69 and 368,637.48

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Solution

The fourth proportional to 655,221.96, 904,056.69 and 368,637.48 is: 508,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,221.96 : 904,056.69 = 368,637.48 : x
  2. Step 2: Convert to fraction form
    655,221.96/904,056.69 = 368,637.48/x
  3. Step 3: Cross multiply
    655,221.96x = 904,056.69 × 368,637.48
  4. Step 4: Simplify right side
    655,221.96x = 333,269,179,978.74
  5. Step 5: Solve for x
    x = 333,269,179,978.74/655,221.96
  6. Step 6: Final answer
    x = 508,635.55

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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.