Home / 427,174,021.92-640,824,995.52-154,608,562.08

Finding the Fourth Proportional to 427,174,021.92, 640,824,995.52 and 154,608,562.08

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Solution

The fourth proportional to 427,174,021.92, 640,824,995.52 and 154,608,562.08 is: 231,935,993.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,174,021.92 : 640,824,995.52 = 154,608,562.08 : x
  2. Step 2: Convert to fraction form
    427,174,021.92/640,824,995.52 = 154,608,562.08/x
  3. Step 3: Cross multiply
    427,174,021.92x = 640,824,995.52 × 154,608,562.08
  4. Step 4: Simplify right side
    427,174,021.92x = 99,077,031,102,269,648
  5. Step 5: Solve for x
    x = 99,077,031,102,269,648/427,174,021.92
  6. Step 6: Final answer
    x = 231,935,993.34

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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.