Home / 640,515,869,108.75-883,925,399,589.40-351,481,599,822.96

Finding the Fourth Proportional to 640,515,869,108.75, 883,925,399,589.40 and 351,481,599,822.96

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Solution

The fourth proportional to 640,515,869,108.75, 883,925,399,589.40 and 351,481,599,822.96 is: 485,052,015,969.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,515,869,108.75 : 883,925,399,589.40 = 351,481,599,822.96 : x
  2. Step 2: Convert to fraction form
    640,515,869,108.75/883,925,399,589.40 = 351,481,599,822.96/x
  3. Step 3: Cross multiply
    640,515,869,108.75x = 883,925,399,589.40 × 351,481,599,822.96
  4. Step 4: Simplify right side
    640,515,869,108.75x = 310,683,513,571,831,554,506,752
  5. Step 5: Solve for x
    x = 310,683,513,571,831,554,506,752/640,515,869,108.75
  6. Step 6: Final answer
    x = 485,052,015,969.78

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Double scale
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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.