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Finding the Fourth Proportional to 655,063.60, 904,005.42 and 368,593.84

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Solution

The fourth proportional to 655,063.60, 904,005.42 and 368,593.84 is: 508,669.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,063.60 : 904,005.42 = 368,593.84 : x
  2. Step 2: Convert to fraction form
    655,063.60/904,005.42 = 368,593.84/x
  3. Step 3: Cross multiply
    655,063.60x = 904,005.42 × 368,593.84
  4. Step 4: Simplify right side
    655,063.60x = 333,210,829,138.61
  5. Step 5: Solve for x
    x = 333,210,829,138.61/655,063.60
  6. Step 6: Final answer
    x = 508,669.43

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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.