Home / 320,515,982.53-478,079,194.32-291,091,755.11

Finding the Fourth Proportional to 320,515,982.53, 478,079,194.32 and 291,091,755.11

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Solution

The fourth proportional to 320,515,982.53, 478,079,194.32 and 291,091,755.11 is: 434,190,241.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,515,982.53 : 478,079,194.32 = 291,091,755.11 : x
  2. Step 2: Convert to fraction form
    320,515,982.53/478,079,194.32 = 291,091,755.11/x
  3. Step 3: Cross multiply
    320,515,982.53x = 478,079,194.32 × 291,091,755.11
  4. Step 4: Simplify right side
    320,515,982.53x = 139,164,911,756,479,968
  5. Step 5: Solve for x
    x = 139,164,911,756,479,968/320,515,982.53
  6. Step 6: Final answer
    x = 434,190,241.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.