Home / 1,271,079,392.61-1,906,583,844.07-338,410,242.21

Finding the Fourth Proportional to 1,271,079,392.61, 1,906,583,844.07 and 338,410,242.21

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Solution

The fourth proportional to 1,271,079,392.61, 1,906,583,844.07 and 338,410,242.21 is: 507,605,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,079,392.61 : 1,906,583,844.07 = 338,410,242.21 : x
  2. Step 2: Convert to fraction form
    1,271,079,392.61/1,906,583,844.07 = 338,410,242.21/x
  3. Step 3: Cross multiply
    1,271,079,392.61x = 1,906,583,844.07 × 338,410,242.21
  4. Step 4: Simplify right side
    1,271,079,392.61x = 645,207,500,460,294,272
  5. Step 5: Solve for x
    x = 645,207,500,460,294,272/1,271,079,392.61
  6. Step 6: Final answer
    x = 507,605,979.78

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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.