Home / 1,271,081,979.72-1,906,587,700.56-338,412,822.48

Finding the Fourth Proportional to 1,271,081,979.72, 1,906,587,700.56 and 338,412,822.48

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Solution

The fourth proportional to 1,271,081,979.72, 1,906,587,700.56 and 338,412,822.48 is: 507,609,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,081,979.72 : 1,906,587,700.56 = 338,412,822.48 : x
  2. Step 2: Convert to fraction form
    1,271,081,979.72/1,906,587,700.56 = 338,412,822.48/x
  3. Step 3: Cross multiply
    1,271,081,979.72x = 1,906,587,700.56 × 338,412,822.48
  4. Step 4: Simplify right side
    1,271,081,979.72x = 645,213,725,052,162,688
  5. Step 5: Solve for x
    x = 645,213,725,052,162,688/1,271,081,979.72
  6. Step 6: Final answer
    x = 507,609,843.70

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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.