Home / 578,100,629.40-866,864,009.70-209,620,872.60

Finding the Fourth Proportional to 578,100,629.40, 866,864,009.70 and 209,620,872.60

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Solution

The fourth proportional to 578,100,629.40, 866,864,009.70 and 209,620,872.60 is: 314,327,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,100,629.40 : 866,864,009.70 = 209,620,872.60 : x
  2. Step 2: Convert to fraction form
    578,100,629.40/866,864,009.70 = 209,620,872.60/x
  3. Step 3: Cross multiply
    578,100,629.40x = 866,864,009.70 × 209,620,872.60
  4. Step 4: Simplify right side
    578,100,629.40x = 181,712,790,138,848,864
  5. Step 5: Solve for x
    x = 181,712,790,138,848,864/578,100,629.40
  6. Step 6: Final answer
    x = 314,327,265.70

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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.