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Finding the Fourth Proportional to 486,265.68, 670,517.60 and 316,184.40

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Solution

The fourth proportional to 486,265.68, 670,517.60 and 316,184.40 is: 435,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,265.68 : 670,517.60 = 316,184.40 : x
  2. Step 2: Convert to fraction form
    486,265.68/670,517.60 = 316,184.40/x
  3. Step 3: Cross multiply
    486,265.68x = 670,517.60 × 316,184.40
  4. Step 4: Simplify right side
    486,265.68x = 212,007,205,045.44
  5. Step 5: Solve for x
    x = 212,007,205,045.44/486,265.68
  6. Step 6: Final answer
    x = 435,990.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.