Home / 674,770.40-1,012,155.60-485,813.60

Finding the Fourth Proportional to 674,770.40, 1,012,155.60 and 485,813.60

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Solution

The fourth proportional to 674,770.40, 1,012,155.60 and 485,813.60 is: 728,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,770.40 : 1,012,155.60 = 485,813.60 : x
  2. Step 2: Convert to fraction form
    674,770.40/1,012,155.60 = 485,813.60/x
  3. Step 3: Cross multiply
    674,770.40x = 1,012,155.60 × 485,813.60
  4. Step 4: Simplify right side
    674,770.40x = 491,718,955,796.16
  5. Step 5: Solve for x
    x = 491,718,955,796.16/674,770.40
  6. Step 6: Final answer
    x = 728,720.40

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1.5x scale

Why These Related Problems?

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