Home / 1,299,321,921.60-1,948,982,882.40-644,019,739.20

Finding the Fourth Proportional to 1,299,321,921.60, 1,948,982,882.40 and 644,019,739.20

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Solution

The fourth proportional to 1,299,321,921.60, 1,948,982,882.40 and 644,019,739.20 is: 966,029,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,321,921.60 : 1,948,982,882.40 = 644,019,739.20 : x
  2. Step 2: Convert to fraction form
    1,299,321,921.60/1,948,982,882.40 = 644,019,739.20/x
  3. Step 3: Cross multiply
    1,299,321,921.60x = 1,948,982,882.40 × 644,019,739.20
  4. Step 4: Simplify right side
    1,299,321,921.60x = 1,255,183,447,628,512,512
  5. Step 5: Solve for x
    x = 1,255,183,447,628,512,512/1,299,321,921.60
  6. Step 6: Final answer
    x = 966,029,608.80

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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.