Home / 786,343,728.44-1,178,824,657.71-320,396,963.66

Finding the Fourth Proportional to 786,343,728.44, 1,178,824,657.71 and 320,396,963.66

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Solution

The fourth proportional to 786,343,728.44, 1,178,824,657.71 and 320,396,963.66 is: 480,313,922.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,343,728.44 : 1,178,824,657.71 = 320,396,963.66 : x
  2. Step 2: Convert to fraction form
    786,343,728.44/1,178,824,657.71 = 320,396,963.66/x
  3. Step 3: Cross multiply
    786,343,728.44x = 1,178,824,657.71 × 320,396,963.66
  4. Step 4: Simplify right side
    786,343,728.44x = 377,691,841,017,822,848
  5. Step 5: Solve for x
    x = 377,691,841,017,822,848/786,343,728.44
  6. Step 6: Final answer
    x = 480,313,922.98

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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.