Home / 1,578,935,998.80-2,368,403,998.20-430,078,654.80

Finding the Fourth Proportional to 1,578,935,998.80, 2,368,403,998.20 and 430,078,654.80

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Solution

The fourth proportional to 1,578,935,998.80, 2,368,403,998.20 and 430,078,654.80 is: 645,117,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578,935,998.80 : 2,368,403,998.20 = 430,078,654.80 : x
  2. Step 2: Convert to fraction form
    1,578,935,998.80/2,368,403,998.20 = 430,078,654.80/x
  3. Step 3: Cross multiply
    1,578,935,998.80x = 2,368,403,998.20 × 430,078,654.80
  4. Step 4: Simplify right side
    1,578,935,998.80x = 1,018,600,005,568,797,568
  5. Step 5: Solve for x
    x = 1,018,600,005,568,797,568/1,578,935,998.80
  6. Step 6: Final answer
    x = 645,117,982.20

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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.