Home / 640,515,869,109.75-883,925,399,590.78-351,481,599,823.96

Finding the Fourth Proportional to 640,515,869,109.75, 883,925,399,590.78 and 351,481,599,823.96

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Solution

The fourth proportional to 640,515,869,109.75, 883,925,399,590.78 and 351,481,599,823.96 is: 485,052,015,971.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,515,869,109.75 : 883,925,399,590.78 = 351,481,599,823.96 : x
  2. Step 2: Convert to fraction form
    640,515,869,109.75/883,925,399,590.78 = 351,481,599,823.96/x
  3. Step 3: Cross multiply
    640,515,869,109.75x = 883,925,399,590.78 × 351,481,599,823.96
  4. Step 4: Simplify right side
    640,515,869,109.75x = 310,683,513,573,200,508,223,488
  5. Step 5: Solve for x
    x = 310,683,513,573,200,508,223,488/640,515,869,109.75
  6. Step 6: Final answer
    x = 485,052,015,971.16

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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.