Home / 998,765,745.40-1,498,409,891.70-385,369,982.20

Finding the Fourth Proportional to 998,765,745.40, 1,498,409,891.70 and 385,369,982.20

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Solution

The fourth proportional to 998,765,745.40, 1,498,409,891.70 and 385,369,982.20 is: 578,155,784.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,765,745.40 : 1,498,409,891.70 = 385,369,982.20 : x
  2. Step 2: Convert to fraction form
    998,765,745.40/1,498,409,891.70 = 385,369,982.20/x
  3. Step 3: Cross multiply
    998,765,745.40x = 1,498,409,891.70 × 385,369,982.20
  4. Step 4: Simplify right side
    998,765,745.40x = 577,442,193,292,732,928
  5. Step 5: Solve for x
    x = 577,442,193,292,732,928/998,765,745.40
  6. Step 6: Final answer
    x = 578,155,784.73

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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.