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Finding the Fourth Proportional to 655,057.20, 903,996.59 and 368,587.47

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Solution

The fourth proportional to 655,057.20, 903,996.59 and 368,587.47 is: 508,660.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,057.20 : 903,996.59 = 368,587.47 : x
  2. Step 2: Convert to fraction form
    655,057.20/903,996.59 = 368,587.47/x
  3. Step 3: Cross multiply
    655,057.20x = 903,996.59 × 368,587.47
  4. Step 4: Simplify right side
    655,057.20x = 333,201,815,996.73
  5. Step 5: Solve for x
    x = 333,201,815,996.73/655,057.20
  6. Step 6: Final answer
    x = 508,660.64

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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.