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Finding the Fourth Proportional to 654,647.67, 903,340.35 and 368,161.61

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Solution

The fourth proportional to 654,647.67, 903,340.35 and 368,161.61 is: 508,021.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,647.67 : 903,340.35 = 368,161.61 : x
  2. Step 2: Convert to fraction form
    654,647.67/903,340.35 = 368,161.61/x
  3. Step 3: Cross multiply
    654,647.67x = 903,340.35 × 368,161.61
  4. Step 4: Simplify right side
    654,647.67x = 332,575,233,117.26
  5. Step 5: Solve for x
    x = 332,575,233,117.26/654,647.67
  6. Step 6: Final answer
    x = 508,021.72

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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.