Home / 679,953,998.40-1,019,930,997.60-543,905,102.40

Finding the Fourth Proportional to 679,953,998.40, 1,019,930,997.60 and 543,905,102.40

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Solution

The fourth proportional to 679,953,998.40, 1,019,930,997.60 and 543,905,102.40 is: 815,857,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,953,998.40 : 1,019,930,997.60 = 543,905,102.40 : x
  2. Step 2: Convert to fraction form
    679,953,998.40/1,019,930,997.60 = 543,905,102.40/x
  3. Step 3: Cross multiply
    679,953,998.40x = 1,019,930,997.60 × 543,905,102.40
  4. Step 4: Simplify right side
    679,953,998.40x = 554,745,673,690,562,112
  5. Step 5: Solve for x
    x = 554,745,673,690,562,112/679,953,998.40
  6. Step 6: Final answer
    x = 815,857,653.60

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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.