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Finding the Fourth Proportional to 628,204.46, 866,978.34 and 370,083.80

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Solution

The fourth proportional to 628,204.46, 866,978.34 and 370,083.80 is: 510,748.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,204.46 : 866,978.34 = 370,083.80 : x
  2. Step 2: Convert to fraction form
    628,204.46/866,978.34 = 370,083.80/x
  3. Step 3: Cross multiply
    628,204.46x = 866,978.34 × 370,083.80
  4. Step 4: Simplify right side
    628,204.46x = 320,854,638,584.89
  5. Step 5: Solve for x
    x = 320,854,638,584.89/628,204.46
  6. Step 6: Final answer
    x = 510,748.74

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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.