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Finding the Fourth Proportional to 655,021.12, 903,937.46 and 368,541.76

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Solution

The fourth proportional to 655,021.12, 903,937.46 and 368,541.76 is: 508,592.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,021.12 : 903,937.46 = 368,541.76 : x
  2. Step 2: Convert to fraction form
    655,021.12/903,937.46 = 368,541.76/x
  3. Step 3: Cross multiply
    655,021.12x = 903,937.46 × 368,541.76
  4. Step 4: Simplify right side
    655,021.12x = 333,138,702,438.33
  5. Step 5: Solve for x
    x = 333,138,702,438.33/655,021.12
  6. Step 6: Final answer
    x = 508,592.31

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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.