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Finding the Fourth Proportional to 655,070.22, 903,995.28 and 368,590.68

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Solution

The fourth proportional to 655,070.22, 903,995.28 and 368,590.68 is: 508,654.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,070.22 : 903,995.28 = 368,590.68 : x
  2. Step 2: Convert to fraction form
    655,070.22/903,995.28 = 368,590.68/x
  3. Step 3: Cross multiply
    655,070.22x = 903,995.28 × 368,590.68
  4. Step 4: Simplify right side
    655,070.22x = 333,204,234,971.99
  5. Step 5: Solve for x
    x = 333,204,234,971.99/655,070.22
  6. Step 6: Final answer
    x = 508,654.22

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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.