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Finding the Fourth Proportional to 628,991,996.80, 943,487,995.20 and 628,991,996.80

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Solution

The fourth proportional to 628,991,996.80, 943,487,995.20 and 628,991,996.80 is: 943,487,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,991,996.80 : 943,487,995.20 = 628,991,996.80 : x
  2. Step 2: Convert to fraction form
    628,991,996.80/943,487,995.20 = 628,991,996.80/x
  3. Step 3: Cross multiply
    628,991,996.80x = 943,487,995.20 × 628,991,996.80
  4. Step 4: Simplify right side
    628,991,996.80x = 593,446,398,057,676,800
  5. Step 5: Solve for x
    x = 593,446,398,057,676,800/628,991,996.80
  6. Step 6: Final answer
    x = 943,487,995.20

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Half scale
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Double scale
Find fourth proportional to 628,991,997.80, 943,487,996.70 and 628,991,997.80
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.