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Finding the Fourth Proportional to 713,793.56, 985,117.40 and 427,313.60

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Solution

The fourth proportional to 713,793.56, 985,117.40 and 427,313.60 is: 589,742.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,793.56 : 985,117.40 = 427,313.60 : x
  2. Step 2: Convert to fraction form
    713,793.56/985,117.40 = 427,313.60/x
  3. Step 3: Cross multiply
    713,793.56x = 985,117.40 × 427,313.60
  4. Step 4: Simplify right side
    713,793.56x = 420,954,062,616.64
  5. Step 5: Solve for x
    x = 420,954,062,616.64/713,793.56
  6. Step 6: Final answer
    x = 589,742.03

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1.5x scale

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.