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Finding the Fourth Proportional to 465,428.80, 698,143.20 and 372,116.80

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Solution

The fourth proportional to 465,428.80, 698,143.20 and 372,116.80 is: 558,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,428.80 : 698,143.20 = 372,116.80 : x
  2. Step 2: Convert to fraction form
    465,428.80/698,143.20 = 372,116.80/x
  3. Step 3: Cross multiply
    465,428.80x = 698,143.20 × 372,116.80
  4. Step 4: Simplify right side
    465,428.80x = 259,790,813,525.76
  5. Step 5: Solve for x
    x = 259,790,813,525.76/465,428.80
  6. Step 6: Final answer
    x = 558,175.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.