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Finding the Fourth Proportional to 878,771.64, 1,318,157.52 and 317,674.92

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Solution

The fourth proportional to 878,771.64, 1,318,157.52 and 317,674.92 is: 476,512.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,771.64 : 1,318,157.52 = 317,674.92 : x
  2. Step 2: Convert to fraction form
    878,771.64/1,318,157.52 = 317,674.92/x
  3. Step 3: Cross multiply
    878,771.64x = 1,318,157.52 × 317,674.92
  4. Step 4: Simplify right side
    878,771.64x = 418,745,584,713.40
  5. Step 5: Solve for x
    x = 418,745,584,713.40/878,771.64
  6. Step 6: Final answer
    x = 476,512.40

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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.