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Finding the Fourth Proportional to 380,979,968.40, 571,469,952.60 and 380,979,968.40

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Solution

The fourth proportional to 380,979,968.40, 571,469,952.60 and 380,979,968.40 is: 571,469,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,979,968.40 : 571,469,952.60 = 380,979,968.40 : x
  2. Step 2: Convert to fraction form
    380,979,968.40/571,469,952.60 = 380,979,968.40/x
  3. Step 3: Cross multiply
    380,979,968.40x = 571,469,952.60 × 380,979,968.40
  4. Step 4: Simplify right side
    380,979,968.40x = 217,718,604,483,097,504
  5. Step 5: Solve for x
    x = 217,718,604,483,097,504/380,979,968.40
  6. Step 6: Final answer
    x = 571,469,952.60

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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.