Home / 1,539,649,383.80-2,309,474,075.70-721,844,353.40

Finding the Fourth Proportional to 1,539,649,383.80, 2,309,474,075.70 and 721,844,353.40

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Solution

The fourth proportional to 1,539,649,383.80, 2,309,474,075.70 and 721,844,353.40 is: 1,082,766,530.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539,649,383.80 : 2,309,474,075.70 = 721,844,353.40 : x
  2. Step 2: Convert to fraction form
    1,539,649,383.80/2,309,474,075.70 = 721,844,353.40/x
  3. Step 3: Cross multiply
    1,539,649,383.80x = 2,309,474,075.70 × 721,844,353.40
  4. Step 4: Simplify right side
    1,539,649,383.80x = 1,667,080,820,867,728,896
  5. Step 5: Solve for x
    x = 1,667,080,820,867,728,896/1,539,649,383.80
  6. Step 6: Final answer
    x = 1,082,766,530.10

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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.