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Finding the Fourth Proportional to 661,570,309.70, 992,355,464.55 and 661,570,309.70

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Solution

The fourth proportional to 661,570,309.70, 992,355,464.55 and 661,570,309.70 is: 992,355,464.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,570,309.70 : 992,355,464.55 = 661,570,309.70 : x
  2. Step 2: Convert to fraction form
    661,570,309.70/992,355,464.55 = 661,570,309.70/x
  3. Step 3: Cross multiply
    661,570,309.70x = 992,355,464.55 × 661,570,309.70
  4. Step 4: Simplify right side
    661,570,309.70x = 656,512,912,014,830,848
  5. Step 5: Solve for x
    x = 656,512,912,014,830,848/661,570,309.70
  6. Step 6: Final answer
    x = 992,355,464.55

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Double scale
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Similar ratio
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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.