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Finding the Fourth Proportional to 661,570,313.20, 992,355,469.80 and 661,570,313.20

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Solution

The fourth proportional to 661,570,313.20, 992,355,469.80 and 661,570,313.20 is: 992,355,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,570,313.20 : 992,355,469.80 = 661,570,313.20 : x
  2. Step 2: Convert to fraction form
    661,570,313.20/992,355,469.80 = 661,570,313.20/x
  3. Step 3: Cross multiply
    661,570,313.20x = 992,355,469.80 × 661,570,313.20
  4. Step 4: Simplify right side
    661,570,313.20x = 656,512,918,961,319,168
  5. Step 5: Solve for x
    x = 656,512,918,961,319,168/661,570,313.20
  6. Step 6: Final answer
    x = 992,355,469.80

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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.