Home / 640,783,507.72-884,246,220.66-362,380,857.16

Finding the Fourth Proportional to 640,783,507.72, 884,246,220.66 and 362,380,857.16

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Solution

The fourth proportional to 640,783,507.72, 884,246,220.66 and 362,380,857.16 is: 500,065,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,783,507.72 : 884,246,220.66 = 362,380,857.16 : x
  2. Step 2: Convert to fraction form
    640,783,507.72/884,246,220.66 = 362,380,857.16/x
  3. Step 3: Cross multiply
    640,783,507.72x = 884,246,220.66 × 362,380,857.16
  4. Step 4: Simplify right side
    640,783,507.72x = 320,433,903,383,261,312
  5. Step 5: Solve for x
    x = 320,433,903,383,261,312/640,783,507.72
  6. Step 6: Final answer
    x = 500,065,778.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.