Home / 6,438,543,999.20-9,657,815,998.80-5,275,325,938.40

Finding the Fourth Proportional to 6,438,543,999.20, 9,657,815,998.80 and 5,275,325,938.40

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Solution

The fourth proportional to 6,438,543,999.20, 9,657,815,998.80 and 5,275,325,938.40 is: 7,912,988,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438,543,999.20 : 9,657,815,998.80 = 5,275,325,938.40 : x
  2. Step 2: Convert to fraction form
    6,438,543,999.20/9,657,815,998.80 = 5,275,325,938.40/x
  3. Step 3: Cross multiply
    6,438,543,999.20x = 9,657,815,998.80 × 5,275,325,938.40
  4. Step 4: Simplify right side
    6,438,543,999.20x = 50,948,127,246,764,138,496
  5. Step 5: Solve for x
    x = 50,948,127,246,764,138,496/6,438,543,999.20
  6. Step 6: Final answer
    x = 7,912,988,907.60

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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.